Create last version before moving to pure enums for built-in functions.

glslang/Include/revision.h

@@ -2,5 +2,5 @@
 // For the version, it uses the latest git tag followed by the number of commits.
 // For the date, it uses the current date (when then script is run).
 
-#define GLSLANG_REVISION "2.3.726"
+#define GLSLANG_REVISION "2.4.727"
 #define GLSLANG_DATE "19-Aug-2015"