These functions are using MODULE_NAME (defined in moduleconfig.h) when they are writing things to the log file. I thought it made more sense if they used MODULE_LOGTAG instead. This can simply be fixed by replacing MODULE_NAME with MODULE_LOGTAG in both MF_Log and MF_LogError in amxxmodule.cpp.
I believe this affects all the modules in AMX Mod X that use these. But it's obviously not a huge issue either.