Make debug logs really when debugging

[abumq]

Currently, debugging is set by developer (using _ENABLE_DEBUG_LOGS) and doesn't identify if really 'Debugging' using gdb or IDEs.

Make this real. Use _ENABLE_DEBUG_LOGS value something like (in line 175 [https://github.com/mkhan3189/EasyLoggingPP/blob/master/easylogging%2B%2B.h#L175 ]):

#define _DEBUG_LOG   (defined(_DEBUG) /* VS */  || defined(/* gdb debug macro */)) &&   (defined(_ENABLE_DEBUG_LOGS) && !defined(_DISABLE_DEBUG_LOGS)) /* for enable */