Code cleanups.  Which means, of course, that it's time to test any features you like to make sure they still work. ;)

Also, (finally) refactor kdesvn-build output into different categories.  The
default is about as verbose as before, but there are several new options:
--quiet (-q short option).  Be quieter.
--really-quiet, only show warnings and errors for the most part.
--verbose, be even more descriptive than normal.
--debug, show all kdesvn-build output. (WARNING, this can be super-verbose).

This implements wish 109501 (Quiet mode feature request), but since I haven't
added the documentation for it yet the bug will remain open.

CCBUG:109501

svn path=/trunk/KDE/kdesdk/scripts/kdesvn-build; revision=438080