HLSL: Turn on reflection, with basic test file, to catch regressions.

This is not a claim that reflection is working right, only a way to
see it is occurring and catch any regression.

hlsl/hlslParseHelper.cpp

@@ -859,6 +859,7 @@ TIntermAggregate* HlslParseContext::handleFunctionDefinition(const TSourceLoc& l
     inEntryPoint = function.getName().compare(intermediate.getEntryPointName().c_str()) == 0;
     if (inEntryPoint) {
         intermediate.setEntryPointMangledName(function.getMangledName().c_str());
+        intermediate.incrementEntryPointCount();
         remapEntryPointIO(function);
         if (entryPointOutput) {
             if (shouldFlatten(entryPointOutput->getType()))