fix client join/leave race with master server ping
Generalise AttackMove to support anything with IMove and AutoTarget.

Also removes the unnecessary JustMove parameter.
Add AttackMove to C&C helicopters.

The other mods don't allow aircraft to AutoTarget.
English please
stich the black wreck together
merged the giant crater into one tile
merged the bottom of the big rock
also a dead worm
category resorting
identical to the right two tiles from 443

BLOXICE and BLOXTREE redundancy
remove building bibs to avoid confusion
randomized bricks
categorize everything
fixed a crash in the actor border rendering
Merge pull request #4461 from chrisforbes/master-ping-thread-safety

fixes #4459
Merge pull request #4464 from pchote/attackmove

Add AttackMove to C&C helicopters
Merge pull request #4427 from Mailaender/d2k-tileset-cleanup

ARRAKIS tileset cleanup
fixed missing Requires: freetype2 on Red Hat & friends
Merge pull request #4470 from Mailaender/fedora-freetype

Fixed missing Requires: freetype2 for Fedora
third GDI mission recreated in Lua