scons: Aggregate all tiny libraries in a single library.

Makes integration of gallium into out of tree components much easier. No
pratical change for components in this tree,

src/gallium/state_trackers/python/SConscript

@@ -43,5 +43,5 @@ if 'python' in env['statetrackers']:
         source = [
             'st_hardpipe_winsys.c',
         ],
-        LIBS = [pyst, softpipe, trace] + auxiliaries + env['LIBS'],
+        LIBS = [pyst, softpipe, trace] + gallium + env['LIBS'],
     )