Use new module/* syntax for kdegraphics.

kdegraphics actually needs it as of this writing since it is marked as
inactive in projects.kde.org. Even if it is made active, kdegraphics's
repo should not be built in conjunction with its logical children's
repos.

kdesrc-buildrc-sample

@@ -301,7 +301,10 @@ module-set kdegraphics
     # Until kdesrc-build supports dependency handling, you should specify
     # submodules that should be built in order specifically, and then the
     # parent module, which will build any remaining submodules.
-    use-modules kde/kdegraphics/libs kde/kdegraphics
+    # kde/kdegraphics/* is a special syntax to include all children of
+    # kde/kdegraphics, but not kde/kdegraphics itself (only one or the other
+    # should be built)
+    use-modules kde/kdegraphics/libs kde/kdegraphics/*
 end module-set
 
 # Contains nifty diversions of time, which generally aren't games.