sync a few minor stuff with uhexen2 svn

git-svn-id: svn+ssh://svn.code.sf.net/p/quakespasm/code/trunk@1132 af15c1b1-3010-417e-b628-4374ebc0bcbd
a few more minor stuff from uhexen2 svn

git-svn-id: svn+ssh://svn.code.sf.net/p/quakespasm/code/trunk@1133 af15c1b1-3010-417e-b628-4374ebc0bcbd
quakespasm.pak: More z-fighting workarounds.

This fixes:

e1m4:
- The secret doors in the room with the five quake-logo buttons on the floor (when open).

e2m2:
- The platform in the water behind the gold key door (when down).
- The wallpiece that pushes the player into the gold key room (when "closed").


git-svn-id: svn+ssh://svn.code.sf.net/p/quakespasm/code/trunk@1134 af15c1b1-3010-417e-b628-4374ebc0bcbd
quakespasm.pak: More z-fighting workarounds.

This fixes:

e2m3:
- The floorpiece (when down) and wallpiece (when open) by the crates opposite the normal exit.


git-svn-id: svn+ssh://svn.code.sf.net/p/quakespasm/code/trunk@1135 af15c1b1-3010-417e-b628-4374ebc0bcbd
quakespasm.pak: Another z-fighting workaround.

This fixes:

e2m3:
- The wallpiece that blocks the way out of the Well of Wishes (when open).


git-svn-id: svn+ssh://svn.code.sf.net/p/quakespasm/code/trunk@1136 af15c1b1-3010-417e-b628-4374ebc0bcbd
Merge branch 'master' into alias5