Debugger: Run to line for LLDB

And some error reporting.

Change-Id: Iab298df0db85063146ed9dc09351844924e22bdc
Reviewed-by: Christian Stenger <christian.stenger@digia.com>
ProjectExplorer: Remove unused variable

Change-Id: I76c5f7dd198247467ecd4b1ffd0b6ff60c43b3f5
Reviewed-by: Christian Stenger <christian.stenger@digia.com>
Debugger: Make 'Jump to Address' work with LLDB

Change-Id: Iba288df0db85063146ed9dc09351844924e22bdc
Reviewed-by: Christian Stenger <christian.stenger@digia.com>