Avoid _vsnprintf_p() and _vsnwprintf_p() on non-MSVC builds to fix MinGW builds.
Avoid _vsnprintf_p() and _vsnwprintf_p() on non-MSVC builds to fix MinGW
builds.

ccpaging/log4cplus,csuideal/log4cplus,ccpaging/log4cplus,csuideal/log4cplus,ccpaging/log4cplus,csuideal/log4cplus,ccpaging/log4cplus,csuideal/log4cplus