Track which extensions were enabled or required, in the intermediate representation, for reflection of the consumer.

git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@26155 e7fa87d3-cd2b-0410-9028-fcbf551c1848

Test/baseResults/sample.frag.out

@@ -1,5 +1,6 @@
 sample.frag
 
+Shader version: 110
 0:? Sequence
 0:38  Function Definition: main( (void)
 0:38    Function Parameters: 
@@ -17,4 +18,5 @@ sample.frag
 Linked fragment stage:
 
 
+Shader version: 110