Blender Git Loki

- fixed this nasty selection problem, i hope for good!
- problem was in limiting the abuse of frontbuffer drawing as happended
a lot in 2.28 and older. the less the better...
- bug was not registering a curarea->win_swap=FRONT_OK, to indicate there
was only drawn in frontbuffer
- cleaned up calls further, and made sure it doesnt draw 1 vertex too many!
also means it works better with selecting in solid drawmode now, check!