* Add offset and block hit testing to library component objects.
* Improved search for library entries.
* Fixed library component editor component removal and addition.
* Library editor now uses wxUpdateUIEvents for updating all UI objects.
* Added version check to cmake find boost macro.
* Removed unused code in file libalias.cpp.
* Added method to WinEDA_DrawPanel to take mouse out of managed mode.
Moved all library entry manipulation code scattered throughout EESchema into
the component library object itself. Adding, removing, and searching is now
handled by the library object. This is the precursor to replacing the current
priority queue code.