Merge pull request #8 from ut-ras/global_clock

Global Clock
Fixed whitespace in Startup.s
Modified GetTime in time.c to use full resolution of timer

Because its a float, returning sub-microsecond precision is trivial.
Merge branch 'master' of https://github.com/ut-ras/Rasware2013 into pin_interrupts

Conflicts:
	RASLib/src/Startup.s