Implement user-defined name hashing.

ANGLEBUG=315
Review URL: https://codereview.appspot.com/6818109

git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1469 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/compiler/ShHandle.h b/src/compiler/ShHandle.h
index 0c77bb0..23f0cf3 100644
--- a/src/compiler/ShHandle.h
+++ b/src/compiler/ShHandle.h
@@ -70,7 +70,8 @@
     int getMappedNameMaxLength() const;
 
     ShHashFunction64 getHashFunction() const { return hashFunction; }
-    const NameMap& getNameMap() const { return nameMap; }
+    NameMap& getNameMap() { return nameMap; }
+    TSymbolTable& getSymbolTable() { return symbolTable; }
 
 protected:
     ShShaderType getShaderType() const { return shaderType; }