General code improvements with respect to string comparasions.
Makefile improvements and fixes.

Change-Id: Ibf3a6183bd3317261aac394c306b68a49ffebd5d
diff --git a/VERSION b/VERSION
index 4a788a0..0f44168 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.6.3
+3.6.4