NDCODE repository - ack.git/commit

Re-re-add the type inference layer, now I know more about how things work.
Remove that terrible float promotion code.

mach/proto/mcg/ir.c		diff \| blob \| history
mach/proto/mcg/ir.h		diff \| blob \| history
mach/proto/mcg/mcg.h		diff \| blob \| history
mach/proto/mcg/pass_promotefloatops.c	[deleted file]	blob \| history
mach/proto/mcg/pass_typeinference.c	[new file with mode: 0644]	blob
mach/proto/mcg/procedure.c		diff \| blob \| history
util/mcgg/ir.dat		diff \| blob \| history
util/mcgg/ircodes.h		diff \| blob \| history
util/mcgg/ircodes.sh		diff \| blob \| history

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