lang/erlang: remove unnecessary patch.
The call to gethostbyname_r is handled correctly on recent Erlang
releases. No PORTREVISION required as the patch is touching unreachable
code in FreeBSD.
Upgrade to version 17.5.6.
- Use PATCHFILES for revision patches, because upstream basically
stopped rolling tarballs for minor updates.
- Rebuild local patch files to make portlint happier.
Upgrade to release R11B-2.
Support for kqueue has been disabled. From the release notes:
http://www.erlang.org/download/otp_src_R11B-2.readme
"Note: configure will refuse to enable kernel poll support on FreeBSD since
kqueue have problems with (at least) pipes on all version of FreeBSD that we
have tested."