GCC 4.7 fixes.

Thanks to Francois Andriot.

admin/kde.py

@@ -781,7 +781,7 @@ def generate(env):
 		lenv.KDEinstall( 'KDEDOC', lenv.join(lang,destination), lenv.join(folder,'index.cache.bz2') )
 		
 		if env['_INSTALL']:
-			dir=lenv.join(lenv.getInstDirForResType('KDEDOC'), lang, destination)
+			dir=lenv.join(env['DESTDIR'], lenv.getInstDirForResType('KDEDOC'), lang, destination)
 			comp='mkdir -p %s && cd %s && rm -f common && ln -s ../common common' % (dir, dir)
 			lenv.Execute(comp)