can't compile in my code of LOG_STRING or LOG_TO_STRING

[GoogleCodeExporter]

I think ,it's better to change string to std::string or change vector to 
std::vector on logging.h line 538 and line 549.


my compile erro is no use "using namespace std;" in my global code;

Original issue reported on code.google.com by lifuling...@126.com on 11 Mar 2013 at 3:41