cp_petroleum a4

Changed :
Lighting on C rooftop, now linear instead of constant,
Added water neer B point,
Added signage to water exits,
Made signage to water entrances bigger,

Fixed :
Spawnroom visualizers,
Clipping,
Shortened respawn times,
First person when entering water

changed from 3cp -> 5cp
streamlined layout
added signage
optimised world geo (possible lighting and stretching artifacts)
places tunnel props better (need to be re-made to fix seams)

Added windows on hatches

changed name from cp_abyss to cp_petroleum (due to existing map of that name).

Added health/ammo packs
Removed vestigial overlays from 5CP layout