Autolathe max material amount clarification

Changed var/max_g_amount from 75000 to 0 and added comment //--This is determined by the matter bins in the machine and not by this variable setting.  Go to RefreshParts() for these settings.

Changed var/max_m_amount from 150000 to 0 and added comment //--This is determined by the matter bins in the machine and not by this variable setting.  Go to RefreshParts() for these settings.

This will prevent confusion over max material settings for the autolathe.