Transfer to DRL's host pc.
Merge branch 'master' of https://github.com/SpiNNakerManchester/spinn_common

Conflicts:
	src/arm_acle.h

adding gcc specific Arm Common Language Extensions (arm_acle.h)
Merge branch 'master' of https://github.com/SpiNNakerManchester/spinn_common

Conflicts:
	src/arm_acle_gcc.h
	src/polynomial.h

Attempting merge.