Vehicle beds.

Using a seat, vehicle beds can now be constructed.

As comfortable to sleep on as regular vehicle seats,
but does not prompt the player to board the vehicle when walked upon.
Added Items: display to inventory screen
Made opaque vehicle doors actually opaque.
Merge branch 'master' into vehicle-parts
Fixed a minor visual glitch with the semi-truck.
Added internal doors for vehicles.

Same materials as a standard door, but:

Is roofed,
cannot be reinforced,
weaker,
opaque.

Mostly exists for the benefit of the sleeper cab in the Semi-truck.
Merge branch 'master' of git://github.com/TheDarklingWolf/Cataclysm-DDA
working towards a unified makefile
Added support for 32-bit linux. still need to figure out all the 32-bit deps
Added RELEASE mode to toggle optimizations
Removed +x flag on source files.

@TheDarklingWolf Take care not to set these, will ya? ;)
Moved some build info into COMPILING
Merge pull request #15 from daftfad/master

Working towards a unified Makefile
Merge git://github.com/kevingranade/Cataclysm
more Makefile stuff
Merge branch 'master' of github_daftfad:TheDarklingWolf/Cataclysm-DDA
[bug] Allow building of later stages of constructions even if first
condition not satisifed.

Fixed makefile yet again.
Fixed incorrect math for construction hotkey 'i'.

Construction staging ACTUALLY  fixed this time.
[bug] fixed construction menu
Merge pull request #17 from daftfad/master

construction bugfixes and more build changes
Reduced scar zombie spawns