Debugger: Allow continuing debugging when switching projects.

Change-Id: If99fc8dc7697eaef50ea7bf7656c0ce788201679
Reviewed-by: hjk <hjk121@nokiamail.com>
Debugger: Dumper fix for Qt 4

QMap, QStringRef

Change-Id: I67fab7f78cf7718e37a9cd77af6fc9c6a9751c66
Reviewed-by: hjk <hjk121@nokiamail.com>
Debugger: Nag user before removing all breakpoints

Change-Id: Idf68cbfee070a107be8f8daf9d6624339864dd2c
Reviewed-by: hjk <hjk121@nokiamail.com>