Make Verilator the default simulation environment and remove support for Icarus Verilog.
Fix misuse of inline keyword (since this is C99, it affects where the function is emitted and can cause link errors)
Terminate strand using cr29 instead of wait loop
Merge branch 'master' of github.com:jbush001/GPGPU

Conflicts:
	benchmarks/alpha_blend/alpha.asm
	benchmarks/alpha_blend/runtest.sh
	benchmarks/dot_product/runtest.sh
	benchmarks/mandelbrot/runtest.sh
	benchmarks/nbody/runtest.sh
	rtl/Makefile
	rtl/testbench/simulator_tb.v