Move all file specific globals to anonymous namespace

libsolidity/codegen/ContractCompiler.cpp

@@ -39,6 +39,9 @@ using namespace std;
 using namespace dev;
 using namespace dev::solidity;
 
+namespace
+{
+
 /**
  * Simple helper class to ensure that the stack height is the same at certain places in the code.
  */
@@ -53,6 +56,8 @@ private:
 	unsigned stackHeight;
 };
 
+}
+
 void ContractCompiler::compileContract(
 	ContractDefinition const& _contract,
 	std::map<const ContractDefinition*, eth::Assembly const*> const& _contracts