gtk+: various cleanup, enable build with xkb and xinput

packages/x11-toolkits/gtk+/build

@@ -7,11 +7,8 @@ $SCRIPTS/build atk
 $SCRIPTS/build tiff
 $SCRIPTS/build jpeg
 $SCRIPTS/build libpng
-#$SCRIPTS/build libXext
 $SCRIPTS/build libX11
-#$SCRIPTS/build libXrender
 $SCRIPTS/build libXrandr
-#$SCRIPTS/build libICE
 $SCRIPTS/build glib
 $SCRIPTS/build pango
 $SCRIPTS/build cairo
@@ -99,7 +96,9 @@ gt_cv_func_ngettext_libc=no \
             --enable-shm \
             --disable-gdiplus \
             --disable-cups \
-            --disable-nls
+            --disable-nls \
+            --enable-xkb \
+            --with-xinput
 
 make SRC_SUBDIRS="gdk-pixbuf gdk gtk modules perf contrib"