Do not use associated data.
Merge branch 'master' of git://github.com/zfsrogue/spl-crypto into hack
GCM mode was not setting "iv" correctly (using CCM method).
Merge branch 'hack'

Conflicts:
	module/spl/spl-crypto.c
ZVOL's AES-CTR was also not setting iv correctly.
Merge pull request #10 from lundman/master

AES-CTR mode was not using correct mech->cm_param type to set iv