Netgame $$$.sav code cleanup

See merge request !894

Fix mouse being grabbed in intermission and cutscenes

See merge request !891

Make P_AddRaiseThinker more configurable via function parameters (needed for UDMF)

See merge request !899

Clean up the plane thinker cleanup

See merge request !897

Do the same with writing ARCH_FFLOOR values in Lua archiving code (reading was already dealt with years ago)

created P_GetFFloorID to get an "ID" of an FOF in its target sector (an opposite to P_GetFFloorByID you could say!), rewrote floor/ceiling rover archiving code to use both P_GetFFloorID and P_GetFFloorByID

we don't actually need put/get pointers at all (plus with everything put into functions they wouldn't work properly anyway)

Plane movement thinker cleanup

See merge request !880

Sync crumblestate in netgames

See merge request !890

Fix minor issue with lua spriteinfo

See merge request !872

Fix emerald hunt not working properly, part 2

See merge request !887

Enable entry searching functions to retrieve entry names longer than 8 characters

See merge request !885

Flipfuncpointers (take two)

See merge request !864

Make the Spawn Object linedef executor able to set the object's angle.

See merge request !877