Bots: Swimming support (only to get out of water)

Bots: Swimming support (only to get out of water)
Avoid evaluation of pick-ups under water
Adjusted detection of vertical jumpads
If there is no enemy at sight wear the laser instead of no weapon
Doors recognition (tested only with accident_v3)
Avoid another strategy think if an alternative goal was chosen on the same frame
Fixed some indents and trailing whitespaces (done automatically by codeblocks, sorry)
Other minor fixes/changes

git-svn-id: svn://svn.icculus.org/nexuiz/trunk@6107 f962a42d-fe04-0410-a3ab-8c8b0445ebaa