MakeBuilding

• First version of MakeBuilding.
• Two new cvars: prs_build_mode.  This is a bitmask, so take the values you want from the following list and add them up.
  1 - Only users listed in mp_serverops will be able to use the plugin
  2 - Log plugin use to the console
• Other new cvar: prs_build_dist.  The distance players can build buildings.  Default is 192.
  
• To use it, simply bind a key to "prs_spawn_building".  This will present a menu containing all the stuff you can build.
  
• Known problems:
• Advanced armorys require a normal armory to be upgraded before they will function properly.  These are marked as "Buggy" on the menu.
• Mines are placed at an odd angle and are often removed automatically.  These are marked as "Buggy" on the menu.
• Hives are placed at an odd angle and show up as built on the alien HUD, but are invisible to marines and cannot be built.  They will also not spawn players.  These are marked as "Buggy" on the menu.
  
• Resource towers (marine and alien) will crash the server when they are fully built.  These are marked with "Instant Crash" on the menu.
  
• Resource nozzles will crash the server when placed.  These are marked with "Instant Crash" on the menu.