Commit
db7d1a7b0 pulled out Mkvcbuild.pm's custom support for building
contrib/pgcrypto, but neglected to inform it that that module can now
be built normally. Or at least I guess it can now be built normally.
But this is definitely causing bowerbird to fail, since it's trying to
test a module it hasn't built.
'hstore_plperl', 'hstore_plpython',
'intagg', 'jsonb_plperl',
'jsonb_plpython', 'ltree_plpython',
- 'pgcrypto', 'sepgsql',
+ 'sepgsql',
'brin', 'test_extensions',
'test_misc', 'test_pg_dump',
'snapshot_too_old', 'unsafe_tests');