- use librtti

- Fix issue to xce_get() api cause client side crash
- add parse resreq section
- add rusage parser
- parse resreq with basic support alternative & compound, still miss select

src/nixSupport/xce.nix

@@ -56,6 +56,10 @@ stdenv.mkDerivation {
     (extralib.overrideAttrs (oldAttrs: {
       separateDebugInfo = true;
     }))
+    (librtti.overrideAttrs (oldAttrs: {
+      separateDebugInfo = true;
+    }))
+    packcc
   ];
 
   build-system = [ pkgs.meson ];