[fluxus] misc plt commits

[dave]

luckily my laptop survived being spat on by a punk band and stood on by
drunk teenagers last night to bring you:

* dissapearing startup error messages reappear
* keyboard/mouse input functions work
* asteroids example works
* axis and fps disabled by default again
* shader-set ported
* osc-msg ported
* fluxus-version propagates from SConscript -> fluxus app -> startup
script/scheme environment
* glut init order was wrong (might have caused those osx crashes)
* startup.scm much simpler - now calls version controlled
fluxus-boot.scm

cheers,

dave