umbrello/basictypes.h

- In AssociationType::Enum,
  - shorten Coll_Message_Asynchronous to Coll_Mesg_Async;
  - shorten Coll_Message_Synchronous  to Coll_Mesg_Sync;
  - shorten Coll_Message_Self         to Coll_Mesg_Self.

umbrello/worktoolbar.h
- In enum ToolBar_Buttons,
  - shorten tbb_Coll_Message_Synchronous to tbb_Coll_Mesg_Sync;
  - shorten tbb_Coll_Message_Asynchronous to tbb_Coll_Mesg_Async.
- In public slots,
  - shorten slotColl_Message_Synchronous  to slotColl_Mesg_Sync;
  - shorten slotColl_Message_Asynchronous to slotColl_Mesg_Async.

Files affected:
- umbrello/assocrules.cpp
- umbrello/basictypes.cpp
- umbrello/dialogs/pages/associationgeneralpage.cpp
- umbrello/toolbarstateassociation.cpp
- umbrello/toolbarstatefactory.cpp
- umbrello/uml1model/association.cpp
- umbrello/umlwidgets/associationline.cpp
- umbrello/umlwidgets/associationwidget.cpp
- umbrello/umlwidgets/umlwidget.cpp
- umbrello/worktoolbar.cpp