Remove global "using namespace std;" declarations, use "std::" prefixes on all std elements

Fix whitespace changes

src/IniFile.cpp

@@ -94,7 +94,7 @@ bool IniFile::ReadFile( RageFileBasic &f )
 				{ break; }
 				// New value.
 				size_t iEqualIndex = line.find("=");
-				if( iEqualIndex != string::npos )
+				if( iEqualIndex != std::string::npos )
 				{
 					RString valuename = line.Left((int) iEqualIndex);
 					RString value = line.Right(line.size()-valuename.size()-1);