Vega Strike Code

Configurable techniques and subtechniques folders.
Techniques will be looked in <data>/<base>/<sub-base>/<technique>.technique
Defaults: <base> = techniques
<sub-base> = .

Useful for providing "technique sets" that can be changed in the config file.

Background edge fixup.
Use vegastrike.config's graphics/background_edge_fixup variable to tune it - the default seems to work fine though.
It tweaks the texturing coordinates used so that background_edge_fixup texels from the edge are stripped off during background rendering.

Update DTD on techniques

Remove a duplicated function definition

Attention Windows users: Do NOT upgrade to this /data revision unless you know a way to compile the engine for windows with cubemaps enabled... --and if you do we'd like to hear about it. This commit commits cubemap versions of all the shader, plus new shaders and techniques (highend_flat, fireglass). It also contains updates to the Agricultural and Diplomatic centers, to use the new shaders, including fireglass, and adding ambient occlusion and shininess. The Mining Base is updated only insofar as its glass bubbles call for the fireglass shader.

more warning fixes + move to vs_dprintf for non-exit error messages

sync with safemode branch -r12610, fix compile error in background.cpp (hopefully) and add verbose_output option to config file analogous to --debug commandline argument, takes same options (master config file already updated in /data, default to off)

Added debug config file option, takes arguments 0,1,2,3 with 0 turning verbose debug off and 3 being most verbose

Add verbose debug config option to config file and allow command line --debug to override it when running vegastrike. Takes same arguments as command-line

Revert non-nv-cubemap change to gfx toggle texture call so it compiles