Put all glslang internals (but not the external interface) into the glslang namespace.

git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@22882 e7fa87d3-cd2b-0410-9028-fcbf551c1848

glslang/MachineIndependent/RemoveTree.cpp

@@ -36,6 +36,9 @@
 
 #include "../Include/intermediate.h"
 #include "RemoveTree.h"
+
+namespace glslang {
+
 //
 // Code to recursively delete the intermediate tree.
 //
@@ -106,3 +109,4 @@ void RemoveAllTreeNodes(TIntermNode* root)
     root->traverse(&it);
 }
 
+} // end namespace glslang