* Schematic editor cancel current tool command now use a single command
ID that is used everywhere the event is generated.
* Moved cancel current tool code from Process_Special_Functions to a
separate event handler.
* Add idle check method to block select object.
* Add block active check to base screen object.
* Some bugs fixed
* Starting enhancements in Libedit: menubar and commands to "plot" current component in PNG or SVF file (SVG file not fully working, must be refined)
* Replaced library pin properties dialog with wxFormBuilder version.
* Remove DialogBlocks version of pin properties dialog.
* Add pin properties dialog support code to pin object.
* Create single event handler for displaying pin properties dialog.
* Remove left over DialogBlocks project file for annotate dialog.
* Fixed escape key bug in library editor new component dialog.
* Add GetUnitsLabel() to get human readable units for dialog labels.
* Translate French comments in all modified files.
* Some minor clean up of Doxygen comments.
* Replace all known instances of (const wxChar*) casts to GetChars() for
wxWidgets 2.9 compatibility.
* Cleaned up get component dialog so last part gets saved on wild card
selections.
* Remove redundant schematic component drawing code.
* Added SCH_COMPONENT constructor to create new component from library
component object.
* Add message panel helpers to WinEDA_DrawFrame and update old message
panel access code.
* Using library viewer to add component to schematic now respects unit
and body style selection.
* Split out application specific command IDs to prevent unnecessary rebuilding.
* Eliminate duplicate menu and tool bar command IDs.
* Split component library editor and viewer definitions to separate header files.
* More component library and document file merge code.
* A bunch of minor string readability and consistency fixes.