Move specctra.cpp, specctra_import.cpp and specctra_keywords.cpp compilation to pcbcommon lib because they containt functions used by the 3D viewer in Cvpcb and Pcbnew.

3D board display: better rendering of the board: the board polygon outlines (generated by the specctra function) is now used to create the 3D body of the board.

Paste popup menu in this dialog now allows pasting a (fp_lib_table)
s-expression element holding (lib) elements.  This provides an 
opportunity for GITHUB library publishers to put the table description
into their README.md file as a (fp_lib_table) element where it can
be quickly copied to clipboard and pasted into the fp lib table dialog.
This is a paste operation, and overwrites from the initial cursor position.

Fix throwing of IO_ERROR in plugin.cpp by converting function name to wxString.GetData().
Switch to const PROPERTIES* in GITHUB PLUGIN functions.

Eeschema: better name for m_SheetList (changed to m_SheetPath) member of  class NETLIST_OBJECT.

* Use wxAuiManager perspective to save and load window settings which should
  allow us to start using more advanced wxAui features like detachable tool
  bars and windows.
* Remove sash size change events, event handler, and sash width clamping code
  since it didn't work all that well anyway.
* Disable the close button on the footprint view pane.
* Update the footprint list box selection when iterating the list using the
  tool bar arrow buttons.
* Merge code from modview.cpp into modview_frame.cpp and remove modview.cpp.

Make pretty prettier by striving for single line module pads.  Add slick std::string based strprintf(), twice.

Add const PROPERTIES* to FootprintDelete().
Add {Get,Set}Properties() to FP_LIB_TABLE::ROW.
Touch up fp table dialog.

Fix an annoying issue about not named nets:
now, these nets are named from the component references and pin names which are connected.
therefore, unless the net or the footprint references are modified, the net name is not modified between 2 netlist calculations.

Write parser and formatter for options.  Write dialog verification used before saving
FP_LIB_TABLEs, triggered from OK button in table editor.
Switch PROPERTY's value column to std::string from wxString.
Add event handler to fp lib table dialog for upcoming options dialog.

* When loading footprint do not retest every footprint in cache.  Only test
  the footprint being loaded.  Fixes long load times on libraries with a lot
  of parts.
* Fix footprint name bug where file extension was added to the end of the
  footprint name.
* Fix bug in path equivalence test due to Posix path separators in footprint
  library table.  Convert paths to native separator before comparison.
* Fix a bug in FOOTPRINT_VIEWER_FRAME::OnActivate() which cause the footprint
  list to always get reloaded when using footprint library tables.
* Remove some unnecessary debugging messages.
* Add a few Doxygen comments to FP_CACHE in kicad_plugin.cpp.

Enhance IO_MGR::GuessPluginTypeFromLibPath() to support the GITHUB plugin.
Build boost with -fPIC on Linux unconditionally, in preparation for
DLL/DSO build of kicad.
Add python script to test back to back reads of GITHUB plugin.

* Make footprint editor work properly with library table.
* Fix bug in Eagle plugin when comparing file timestamps.
* Fix bug in footprint viewer when error occur loading footprints from
  the selected library.
* Fix error message display by in footprint viewer on library load error.

Other platforms to follow as volunteers test support and get openssl in 
place.

* Make footprint viewer work properly with library table.
* Fix bug in Eagle plugin when enumerating footprints.
* Add missing P-CAD plugin from footprint library table editing dialog.
* Fix bug in FOOTPRINT_INFO::LoadLibraries when error occur loading footprints
  from libraries.

BUILD_GITHUB_PLUGIN will build GITHUB_PLUGIN on Linux now.  Don't know if the parser works yet, but the FootprintEnumerate() function worked in testing.

1. block created from-left-to-right selects only 100%inside selection objects (as it now does)
2.block created from-right-to-left selects all overlapping objects inside selection
From the patch sent by mathieulj (mathieulj), and some fixes and code cleaning.

pcbnew.py + doxygen-xml files, and build .i files with docstrings,
those .i files are included back again to build a pcbnew.py with
extended documentation from C++, finally we take the final pcbnew.py
to build the doxygen-python documentation

Fix minor bugs in cleanup dialog options and plot solder mask function (thanks to Lorenzo to locate these bugs)

* Remove fp_lib token from board and s-expr netlist file format.
* Fix a bunch of Doxygen warnings.
* Remove some extra debug log messages.

* Add code to CvPcb to handle assigning component footprints from the
  footprint library table instead of the search path method.
* Add code to CvPcb to allow editing of the footprint library table.
* CvPcb footprint and component panes display fully qualified FPID names.
* Make CvPcb library pane display footprint library table nicknames instead
  of library file names.
* Add code to FP_LIB_TABLE object to test the paths in the table against the
  list of libraries loaded from the project file.
* Add code to FP_LIB_TABLE to convert assigned footprints in a NETLIST from
  legacy format to footprint library table format.
* Split out COMPONENT_NET, COMPONENT, and NETLIST objects from netlist_reader
  files and create new pcb_netlist files.
* Fix minor wxListView scroll bar sizing issues.
* Add new token and code to save and load FPID nickname in board file.
* Add new token and code to save and load FPID nickname in s-expression net
  list file.
* Add WX_STRING_REPORT object to dump strings to a wxString object.