Start work on a two-pass rendering model for near/far objects

Bugs:
 - internal views are messed up
 - planets go wrong once they leave the near rendering pass
 - horribly unoptimised so far
Fix internal views
More two-pass rendering work

A bit of optimisation, fix some depth-buffer issues.
Improves but doesn't fix planets - still a problem with atmosphere.
Adjust the boundary between the two render passes

Adjusting the boundary to 100m means that most of the rendering takes place with a near clip plane of 100, which gives acceptable results on a 24-bit depth buffer at visual ranges.

There's still a need to do a short-range rendering pass for the few objects in that region, but it's fairly cheap.
Go back to cheating on planet atmosphere rendering

Even at 100m near plane the depth buffer isn't good enough at wide distances
Sort out planet atmosphere renderings
Include installation/repair time on F3 screen

Add installation_time and repair_time to the equipment.plist properties (both in seconds; if installation_time specified but not repair_time, repair time is set to half installation time)
Take out debugging code
Adjust heating up from energy damage / cool-down

 - NPCs now get heating from energy attacks too
 - heating is reduced significantly for ships larger than Cobra
 - cooling rate to space is reduced quite a bit
 - NPC hullHeatLevel uniform now clamped to 0..1 (fixes shader whiteout)

Mostly cosmetic in normal space, but makes fighting near a star more
dangerous.

Cooling rate and NPC heating may need a bit of fine-tuning.
Fix bug with high-shimmer stars

Only really comes up with high TAF in a nova system.
Update dependency statuses in OXZ manager after every download
Linux uninstall script: Fixed error handling
Linux uninstall script: Minor fixes on last commit
Fixed key 5 switching to status screen when used during savegame filename entry.
Linux uninstall script: Parent folder removal validity mechanism
Linux uninstall script: Rollback error code value change
Update changelog with latest bug fix.
Add scrolling to short range chart
Undocumented feature, testing purposes only: Make animation timer interval settable via user defaults. Allows setting of maximum desired framerate on the fly.
make short range chart scrolling smooth and fix mouse