slightly tighter cs_append
nohash
norandom

Plus, removed rng from Flow.config. It might be a bit early for that, plus, the
layer below uses a fixed rng pervasively.

I guess it's easy to re-add, in any case.
nodiffie + nohellman
norsa
no mir-mirage-*
noreturn
nodes
noarc4

but stream ciphers are broken
nocipher

Reorganize the way cipher state is tracked, move all ciphers to nc.

Also use explicit marking of whether to use random ivs.
nohexa
nobase
nocrypto.

+ oasis 0.4.4 regen
Merge pull request #34 from mirleft/nocrypto

Nocrypto
disable RC4 for now (nocrypto implementation is broken)
another remark here
style