[libre-riscv-dev] big code-reorg (structure)

[Luke Kenneth Casson Leighton]

i'm doing a big reorganisation on the IEEE754 FPU code, making
subdirectories and have added a setup.py and associated Makefile.
this also involves moving nmoperator.py, singlepipe.py, multipipe.py,
pipeline.py, stagectl.py and iocontrol.py to a subdirectory nmutil,
which will (eventually, once it's been decided what the names are)
move to its own git repo.

the nmutils (whatever it becomes) library is covered by
http://bugs.libre-riscv.org/show_bug.cgi?id=62 and we need a decision.

l.