The change in behaviour to the OnLevelInit forward params isn't obvious
when compiling a plugin, deprecate it to make it a lot more obvious that
something has changed.
Some plugins rely just on the timing of OnLevelInit rather than doing
anything with the entity lump, for these plugins offer a new OnMapInit
forward that is implemented in core rather than sdkhooks. If / when we
offer a new entity lump manipulation API in the future this'll be the
forward where it can be used to make changes.
Newer Source engine versions now use a dynamically allocated buffer for
the map entity lump, and some maps have over 16MB of entity data - far
larger than our 2MB limit.
There is no sane way we can currently handle this, so just remove the
functionality from the forward until a more comprehensive API can be
designed.
Fixes#1470
Looks like the |weapon| parameter went missing during the switch to the
transitional syntax.
There was no -Post typedef including the |damagecustom| bit at all too.
