VCS: Do not check for existence of ProjectExplorer

All VCS plugins depend on the ProjectExplorer, so it is there.
No need to test.

Change-Id: Ie6ec210af0f63f1bdad0e4973743ae68f9279a5c
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Debugger: Better location for hunk number in disassembly

Change-Id: If42d8d1f027df25225b87cbbb027efd41fe1658b
Reviewed-by: hjk <hjk121@nokiamail.com>