keyutils-1.6 released

I have tagged and push keyutils v1.6 to:

	https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/keyutils.git

Significant changes since v1.5.11 include:

 - When scanning its config files to find a helper to execute, request-key now
   takes the match with the least number of characters matching a wildcard
   rather than the first match.

   This allows a more specific match on a particular type to be installed that
   overrides a general match (say with the DNS resolver).

 - request-key has an additional flag that allows helper execution to be
   suppressed to make config debugging easier.

 - Support in keyctl for public key operations using asymmetric-type keys
   (requires kernel v4.20).

 - The dependency on MIT Kerberos is removed.

 - Added pkg-config spec for libkeyutils.

David