Added "predicated" input to branch predictor.
Adds use of divider.
Removed unnecessary taps.
Same initial contents in RAM and ROM for debugging.
Fixed memory shift, added MMIO.
Fixed program counter.
Changed ROM program to Sieve of Eratosthanes.
Merge branch 'simt' of https://github.com/cdkersey/harmonica into simt

Conflicts:
	funcunit.h
	harmonica.cpp
	rom.s
basic floating point unit for simt, working logic.