Netarchive compare changes

See merge request STJr/SRB2!563

Refactor P_SpawnHoopsAndRings

See merge request !562

Make lines and sides use the mapload copies in P_NetArchiveWorld() too; do no longer use vres stuff there.

Replace lump-based difference checks for sectors in P_NetArchiveWorld(), now it uses the mapload-created copy instead.

Store a copy of sectors, lines and sides in memory so that P_NetArchiveWorld() can soon use them instead of relying on re-opening the original lumps.
Fix print type issue.

Make both NiGHTS hoop types use the same spawning code.

See merge request STJr/SRB2!560

Flats in walls

See merge request STJr/SRB2!548

Fix super theme ending early if invincibility expired

See merge request !559

Fix pflags not being properly reset when entering dust devil from top

See merge request !556

(UDMF prereq.) Map data lump interface

See merge request STJr/SRB2!535

# Conflicts:
#	src/p_setup.c

# Conflicts:
#	src/p_mobj.c

As a result, the old generic hoops now use 24 sprites instead of 32.

Better Deadzones

See merge request !541

Choose a random port as a client

See merge request STJr/SRB2!554

Don't uncurl from spin if Elemental Stomp is used

See merge request STJr/SRB2!555