Commit patch about  cvpcb, pcbnew and layout editor menu items, with 3 menu labels modified in Eeschema.

Viewlib: ensure in wxListBoxes  the lib and the component are always shown as selected when a lib and component are specified (when called by the get component dialog for instance)

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

* Pressing 'Enter' while the focus is in the tree did not work due to the
  double-click wxWidgets workaround.  Make it work.
* More clearly document what is happening and how it can be tested.

* Fix string concatenation for _( "Unit" ) + wxT( " " ). This failed
  compiling against wxWidgets 2.8 (thanks Cirilo Bernardo ).
* Base the indentation on a measured observation with explanation
  (98%-ile of name-length found in library). The previously chosen 24
  character indentation was too wide for most.
* Don't use a #define spilling into the global namespace, but use
  a locally defined constant for COLUMN_DESCR_POS.

Eeschema: Remove usage of tabs in dialog_choose_component.cpp strings, because they do not work very well on Linux, and do not work on Windows.
Fix incorrect rotation of components (CCW instaed of CW)

* Manually change fbp file minor version number so dialog could be edited
  with latest release version of wxFormBuilder.
* Give component view panel more weight for improved component view size.
* Add padding around dialog button sizer.

* Improve component chooser redraw to fit in wxWidgets redraw strategies.
* Use LIB_COMPONENT::Draw and LIB_COMPONENT::GetBoundingBox for drawing the
  component
* Make resize redrawing work properly.

* 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

Fix minor bug in eeschema (opening a relative path does not work) (patch from HennerZeller).

* make some more fields 'const' that can.
* Instead of previous/next _visible_ element, Go through
      previous and next element. Otherwise the cursor stops moving
      if the item is only partially visible.

* 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

The desire is to migrate designs *away from* case independence, and to create
designs which use literally (case specific) interpreted component names. But for
backwards compatibility, you may turn OFF this option if you really must.
(Remember that with KiCad using text data files, typically you would be better
off simply doctoring those files into a case literal state with a text editor
and move forward into the brave new world of case specificity. Also, BOM
generators may not work properly when you have this option turned OFF, the xml
export's referential integrity is broken on library part name. Hence the default
is ON now, as of 29-Jan-2014.

Add missing calls to Show( false ) to some main frames (Kicad, eeschema, gerbview), to force config saving when closing these windows.
Code cleanup and minor coding style fixes  in footprint_wizard_frame

Add EDA_BASE_FRAME::Show() and call SaveSettings() only from there for all derived wxFrames.  Remove calls to SaveSettings() elsewhere.

Update demos. Fix  pspice netlist issues when using ( and ) in net names ( parenthesis are replaced by underscore) .

eeschema: fix compil issue. Boost build: boost lib context built only on OSX (does not build on mingw, and not needed)

Added PICKED_ITEMS_LIST::FindItem().

Minor change: Eeschema+Pcbnew: display timestamp in edit dialogs (for footprints, sheets, components)

eeschema/dialogs/dialog_lib_new_component.cpp was not expanding part name field nor setting initial focus.