Fix omitted inclusion of (required) <stdarg.h> in runtime.h (also included in genericLogger.h anyway), fixed include order because of mingw that requires <unistd.h> to be included BEFORE <time.h> so that localtime_r is defined...
Fix omitted inclusion of (required) <stdarg.h> in runtime.h (also included in genericLogger.h anyway), fixed include order because of mingw that requires <unistd.h> to be included BEFORE <time.h> so that localtime_r is defined...

jddurand/c-genericLogger,jddurand/c-genericLogger,jddurand/c-genericLogger