support for CCM mode (only specified for AES)
Merge pull request #24 from mirleft/ccm

Ccm
simplify ccm api
remove asserts from Common
remove input-dependent assert
remove superfluous assert
accelerate asserts
check nonce in input
the other assert follows
note the other assumption
Merge pull request #25 from mirleft/noassert

Noassert
rpad
Merge branch 'master' into ctypes

Conflicts:
	setup.ml
	src/block_cipher.ml
	src/nocrypto.mldylib
	src/nocrypto.mllib
fix deps, XMETARequires