Vega Strike Code

Merged Klauss' commit for premult alpha blend mode (r12630) onto the reformat branch.

Hunted for unsafe macros, one folder at a time. Gone through the main /src folder, and subfolders /gfx,
/cmd/ai and /cmd/collide2. Probably about 100 macros have been wrapped in do{}while(0). A problem
with vegaserver about it not being able to load the universe seems to have been fixed.

* wrapped a few more macros in do{}while(0)'s
* removed #include "unit.cpp" from unit.h; added #include "unit.h" to unit.cpp
* made it work :) unit.cpp now compiles to its own object file, for both vegastrike and vegaserver
* had to add a few <xxx>_server.cpp files, and modify the Makefile.am lists quite a bit
* re-uncrustified all changed files

planetary_transform.h and all its tentacles exorcised.

All warnings squashed, except for those happening in boost, of course.

Add premultiplied alpha blending mode to techniques:
ONE INVSRCALPHA

All files in the /src/gfx folder have been scanned for multi-line macros without do{}while(0) wrappers and fixed. About 1/3 of the files have also been const-corrected (adding const to functions that don't change the class state (usually those that return a value)). Run-time problems remain, however.

Managed to massage gnuhash.h enough that it could be reformatted by uncrustify.

All sources reformatted. Well, two files would NOT be reformatted: python_class.h and gnuhash.h. They both killed uncrustify by declaring macros that open a brace, and macros that close a brace. I also skipped the Sound folder, which appeared to contain files from an external library. The engine builds, but there's a couple of runtime issues: The subliminal messages at the game boots were replaced by a white rectangle, and some planets or stars, I think stars, look like they have a box around them.

Three BAD macros are now nicely wrapped in do{...}while(0)'s in basecomputer.cpp.