[MP] Improve some error messages for MAX_PATCH_PLANES to assist tracking.
[MP] Init dists and sides arrays in ChopWindingInPlace.
[MP] Unused cm prototypes
[MP] Allow weapons to be registered if they are disabled again.
If player uses give all or some server mod to give weapons like merc mode etc, there will be issues otherwise.
Merge branch 'master' into openal-soft