IAnalyzerTool has now 2 new virtual methods used to create the global and per-project settings.
No need to create any static factory method and pass a pointer to them to the AnalyzerGlobalSettings
instance anymore.

The Valgrind plugin is now using it, the memchecktool creates the settings for all
valgrind tools.

Change-Id: I3c5845ceb7151130032cfff4ab5b7b36ca2459d9
Reviewed-by: hjk <qthjk@ovi.com>