Null pointer reference in a case where the global namespace is
explicitly specified using ::

Task-number: QTCREATORBUG-351
Review-pending-by: Roberto Raggi

Now, the ASTVisitor constructor takes a valid reference to a TranslationUnit.

Task-number: QTCREATORBUG-282

Done with Erik Verbruggen

Done with Erik Verbruggen

Done with Erik Verbruggen

Done with Erik Verbruggen

Ensure the code model receives file names with clean paths ('/')
and fix paths in the relevant places of the code model. Pass on clean
paths from Cpp reference find and display them correctly in the search
window tooltip.

Reviewed-by: Roberto Raggi <roberto.raggi@nokia.com>

updateModifiedFiles ckecks the timestamp and reparses all the modified files in the current snapshot.

Reviewed-by: Thorbjørn Lindeijer <thorbjorn.lindeijer@nokia.com>

At least for now we ignore the types of the actual arguments

Task-number: QTCREATORBUG-170

Reviewed-by: Roberto Raggi <qtc-committer@nokia.com>