Import some changes from internal

indra/llmath/llcalcparser.cpp

@@ -1,46 +0,0 @@
-/*
- *  LLCalcParser.cpp
- *  SecondLife
- *
- *  Created by Aimee Walton on 28/09/2008.
- *  Copyright 2008 Aimee Walton.
- *
- */
-
-#include "linden_common.h"
-
-#include "llcalcparser.h"
-using namespace boost::spirit::classic;
-
-F32 LLCalcParser::lookup(const std::string::iterator& start, const std::string::iterator& end) const
-{
-	LLCalc::calc_map_t::iterator iter;
-
-	std::string name(start, end);
-	
-	if (mConstants)
-	{
-		iter = mConstants->find(name);
-		if (iter != mConstants->end())
-		{
-			return (*iter).second;
-		}
-	}
-	else
-	{
-		// This should never happen!
-		throw_(end, std::string("Missing constants table"));
-	}
-	
-	if (mVariables)
-	{
-		iter = mVariables->find(name);
-		if (iter != mVariables->end())
-		{
-			return (*iter).second;
-		}
-	}
-	
-	throw_(end, std::string("Unknown symbol " + name));
-	return 0.f;
-}