Ability to modify SPEC numbers to improve playability.

[royfalk]

When flying around planets and jump points, it can take several minutes to get out of the gravity well.
When flying to distant places (mining base) it can take over a minute.
This may be realistic, but it's also boring. We should be able to tweak the numbers using the configuration file to reduce this for people who just want to play the game.

[evertvorster]

There are two camps on this, the people who like it realistic, and those who just like to zoom around.

It would be possible to satisfy both camps by re-using the physics switch in the setup. On realistic, the SPEC would take forever to get out of the well. At the moment the options are Classic, Realistic and Default.

Default can then also mean that SPEC comes on much quicker and make the game play less "boring"

With the way that SPEC takes a little while to come on, a faster craft and judicious use of "Travel" GCNC gets you out of the gravity well pretty quickly as well.

[royfalk]

Clarified the above text - I meant it to be in the configuration file.