*) Rework the set language support, simplify it by using KIWAY.  Now any major
   frame with a "change language" menu can change the language for all KIWAY_PLAYERs
   in the whole KIWAY.  Multiple KIWAYs are not supported yet.

*) Simplify "modal wxFrame" support, and add that support exclusively to
   KIWAY_PLAYER where it is inherited by all derivatives.  The function
   KIWAY_PLAYER::ShowModal() is in the vtable and so is cross module capable.

*) Remove the requirements and assumptions that the wxFrame hierarchy always
   had PCB_EDIT_FRAME and SCH_EDIT_FRAME as immediate parents of their viewers
   and editors. This is no longer the case, nor required.

*) Use KIWAY::Player() everywhere to make KIWAY_PLAYERs, this registers the
   KIWAY_PLAYER within the KIWAY and makes it very easy to find an open frame
   quickly.  It also gives control to the KIWAY as to frame hierarchical
   relationships.

*) Change single_top to use the KIWAY for loading a KIFACE and instantiating
   the single KIWAY_PLAYER, see bullet immediately above.

*) Add KIWAY::OnKiwayEnd() and call it from PGM_BASE at program termination, this
   gives the KIFACEs a chance to save their final configuration dope to disk.

*) Add dedicated FRAME_T's for the modal frames, so m_Ident can be tested and
   these modal frames are distinctly different than their non-modal equivalents.
   KIWAY_PLAYER::IsModal() is !not! a valid test during the wxFrame's constructor,
   so this is another important reason for having a dedicated FRAME_T for each
   modal wxFrame.

On balance, more lines were deleted than were added to achieve all this.

- Converted the Next/Prev C casts to static casts and removed the type
  unsafe ones
- Splitted as virtual the VIA::Flip member instead of using RTTI
- Heavily refactored the 'unconnected track' cleanup routine
- Misc constification

Plots function: fix a bug about virtual PLOTTER::Text, which was not virtual for derived classes due to a missing parameter in ::Text in these classes. Noticeable only in SVG plot.
SVG plot, fix a missing reinitialization in plot lines, which could define a filled polyline, instead of a simple polyline
(these fixes solve Bug #1313084 )

[MacOSX] Fix for name collision with OSX headers, Maciej, Tomasz or others feel free to rework if you want/like

- SEGVIA becomes VIA
- Drill size moved from TRACK to VIA
- Removed shape from TRACK, becomes ViaType in VIA
- GetTrace becomes GetTrack, for uniformity
- Some minor constification and typo fixes

*) void KIWAY::ExpressMail( FRAME_T aDestination, MAIL_T aCommand, const std::string& aPayload, wxWindow* aSource=NULL );
*) virtual void KiwayMailIn( KIWAY_EXPRESS& aEvent );
*) enum MAIL_T expansion into the brave new world if cross KIWAY_PLAYER communications.

Let the KIWAY_PLAYING begin.....
through well conceived mail from one KIWAY_PLAYER to another.
Get thinking now.  Add a new MAIL_T value, then send ExpressMail(), 
and receive it in KiwayMailIn(), it's that easy.

add back missing pcbnew cross probing event handlers.  eeschema launches kiface versions of pcbnew & cvpcb if not single.

    Eeschema, Pcbnew, and Cvpcb all run under the same process now,
    FOR THE VERY FIRST TIME!

*)  Added KIWAY::PlayerCreate(), PlayerClose(), and PlayersClose().

*)  Factored FRAME_T into <frame_type.h> from ID_DRAWFRAME_TYPE.

*)  Found that the following command line is helpful for collecting all the *.kiface
    files into the <build>/kicad/ directory so that kicad can find them.

      $ cp `find . -name '*.kiface'` kicad/

    Maybe somebody will want to rework how the CMake files are organized so all
    the binaries can go into the same place.  See python-a-mingw-us.

*)  This might fix the problem on the Mac where child process windows were not
    coming to the front.  See ->Raise() in kicad/mainframe.cpp.

*)  You can set USE_KIFACE to 0 in kicad/mainframe.cpp to chain load child exes
    instead of using the KIFACE modules directly, i.e. revert.

    if it is running under single_top.cpp or under a project manager.

*)  Test Kiface().IsSingle() when adding menus, some operations are not permitted
    when running under a project manager and the KIWAY_PLAYER is pegged to a
    specific project.

*)  Implemented KIWAY::KiFACE() so it loads *.kiface files.  They still have to be
    in the same directory as the main *.exe launcher, so this presents some difficulty
    when the binaries are not yet installed but rather the *.kiface files are still
    in their original build directories.  For today, I simply copied _pcbnew.kiface
    to build/kicad/.

*)  Add a test case to kicad/mainframe.cpp just to get an early peek at loading
    _pcbnew.kiface under the C++ project manager.  Got that working for one
    specific invocation just for proof of concept.  Surprise, it works.

was used locally.  Then comment it out in favor of a newer strategy for
filling in nicknames in cvpcb. 

Add MODULE* FootprintLoadWithOptionalNickname( const FPID& aFootprintId )
        throw( IO_ERROR, PARSE_ERROR );
from code found elsewhere.

Dialog Freeroute: if freeroute.jar is find in kicad binaries, it is run as a standard java application, not as web applcation
Very minor other fixes
FPC_(SMD_type)_footprintwizard.py wizard finished.

!   The initial testing of this commit should be done using a Debug build so that
    all the wxASSERT()s are enabled.  Also, be sure and keep enabled the
    USE_KIWAY_DLLs option.  The tree won't likely build without it.  Turning it
    off is senseless anyways.  If you want stable code, go back to a prior version,
    the one tagged with "stable".

*   Relocate all functionality out of the wxApp derivative into more finely
    targeted purposes:
    a) DLL/DSO specific
    b) PROJECT specific
    c) EXE or process specific
    d) configuration file specific data
    e) configuration file manipulations functions.

    All of this functionality was blended into an extremely large wxApp derivative
    and that was incompatible with the desire to support multiple concurrently
    loaded DLL/DSO's ("KIFACE")s and multiple concurrently open projects.
    An amazing amount of organization come from simply sorting each bit of
    functionality into the proper box.

*   Switch to wxConfigBase from wxConfig everywhere except instantiation.
*   Add classes KIWAY, KIFACE, KIFACE_I, SEARCH_STACK, PGM_BASE, PGM_KICAD,
    PGM_SINGLE_TOP,
*   Remove "Return" prefix on many function names.
*   Remove obvious comments from CMakeLists.txt files, and from else() and endif()s.
*   Fix building boost for use in a DSO on linux.
*   Remove some of the assumptions in the CMakeLists.txt files that windows had
    to be the host platform when building windows binaries.
*   Reduce the number of wxStrings being constructed at program load time via
    static construction.
*   Pass wxConfigBase* to all SaveSettings() and LoadSettings() functions so that
    these functions are useful even when the wxConfigBase comes from another
    source, as is the case in the KICAD_MANAGER_FRAME.
*   Move the setting of the KIPRJMOD environment variable into class PROJECT,
    so that it can be moved into a project variable soon, and out of FP_LIB_TABLE.
*   Add the KIWAY_PLAYER which is associated with a particular PROJECT, and all
    its child wxFrames and wxDialogs now have a Kiway() member function which
    returns a KIWAY& that that window tree branch is in support of.  This is like
    wxWindows DNA in that child windows get this member with proper value at time
    of construction.
*   Anticipate some of the needs for milestones B) and C) and make code
    adjustments now in an effort to reduce work in those milestones.
*   No testing has been done for python scripting, since milestone C) has that
    being largely reworked and re-thought-out.

Rework on 3D viewer (work in progress): Disable or enable layers, grid or 3D footprint shapes should be now faster.

Eeschema:  * Preselect the currently chosen component in the browser when pressing the thumbnail view.
* Various smallish documentation updates in the component chooser area.

* Allow to select units in components that have more than one right in the
  component chooser dialog.
* Keep chosen unit in history.
* Show preview of current component unit as thumbnail image next to the
  description box.
* Fixes lp:1280567

* Apply Henner Zeller's patch to add connecting line from reference and labels to component position whilst moving to help identify which component the reference or label belongs too

Add a workaround to fix a new bug in wxWidgets 3.0 ( Windows specific ) which shows icons only with a size = 16x16 in menus which have attribute wxITEM_CHECK