Always recompile after a rebase :)

The category differs between e.g. TODO tasks, compiler errors/warnings,
qml syntax errrors ... Idea is that every plugin can manage it's
own virtual list of tasks.

Reviewed-by: dt

 * Handle Warnings by the perl build scripts run by ABLD.
 * Handle critical failures in CPP on windows.

Reviewed-By: con

Reviewed-by: ck

Done with Erik Verbruggen

Done with Erik Verbruggen

Done with Erik Verbruggen

Done with Erik Verbruggen

Done with Erik Verbruggen

Done with Erik Verbruggen

Done with Erik Verbruggen

Done with Erik Verbruggen

Done with Erik Verbruggen

Done with Erik Verbruggen

Done with Erik Verbruggen

When setting CDB_PATH via the environment.

Reviewed-By: ossi