The jitter cpu/vm modules used an unecessary vm_ prefix for various api.
jitter.cpu.vm_get_gpreg() => jitter.cpu.get_gpreg()
jitter.vm.vm_get_mem... => jitter.vm.get_mem...
Fat patch here: some API have changed.
Each irbloc now affects a special "IRDst" register which is used to
describe the destination irbloc. It allows simple description of
architectures using delay slots. Architectures semantic and tcc/python
jitter are modified in consequence. LLVM jitter is disabled for now,
but should be patch soon.
Pierre LALET