* Correct all user strings and comments for the correct capitalization of
application names according to JP. They are KiCad, Pcbnew, CvPcb,
Eeschema, and GerbView.
* Add a note the the user interface policy about the correct capitalization.
* Rename all ADD_MENUITEM_* functions to AddMenuItem and move them to
wxstruct.h since they are used by the Kicad main frame classes.
* Move SET_BITMAP and SETBITMAPS definitions to wxstruct.h.
* Fix a bug in SET_BITMAPS that prevented enabling menu item images on
OSX.
* Rename MsgItem to EDA_MSG_ITEM.
* Remove redundant includes from modified files.
* Doxygen and coding style policy fixes.
* Add USE_IMAGES_IN_MENUS definition to override the default platform
behavior for adding images to menu items.
* Update COMPILING.txt to document how to use USE_IMAGES_IN_MENUS.
* Fix Windows segfault when creating language selection submenu introduced
by new bitmap code in r3087.
* Changed per email from JP from CVPcb to CvPcb because I'm getting old and
blind and misread the email.
* Lot's of Doxygen comment and coding style policy fixes.
* Check user write permissions before saving project and net list files.
* Append read only to file name and path in title bar when the user
does not have write privileges.
* Don't display file dialog every time the net list or project file is
saved.
* Add save as and save project file as commands.
* Make capitalization of CVPcb consistent in all user strings.
* Doxygen comment and coding style policy fixes.