Before the refactor library browser display Bezier curves correctly only
once, at other times they were just straight lines or crashed the
application.
* Break classes_body_item.cpp(.h) into more reasonable size bites.
* Rename classes_body_item.cpp(.h) to lib_draw_item.cpp(.h)
* Fix some unsatisfied header file dependencies.
* Add stubs to component library draw item base classe to handle editing
internally.
* Lots of code cleaning.
jean-pierre charras
Maciej Suminski
Wayne Stambaugh
charras