There is no dedicated change log but version 2.10 was introduced to
pkgsrc 2.5 years ago. The current capability is described by
http://docs.adacore.com/aws-docs/aws.html
This is roughly equivalent to Adacore release 2013 of aws.
The "gnutls" option was added as an alternative to ssl.
Oops, I thought the previous build passed.
It was missing a directory creation and it needs to specifically
pull in ldap and ssl buildlinks for those options, as well as
update the link parameters. Ride on the revbump from a few minutes ago.