Signed-off-by: Rosen Penev <rosenp@gmail.com>

New packages:
* erlang-tools: This Erlang/OTP package provides support for misc tools.
* erlang-reltool: This Erlang/OTP package provides support for release management.
* erlang-erl-interface: This Erlang/OTP package provides support for erlang interoperability with other languages.
* erlang-os_mon: This Erlang/OTP package provides the following services:
  - cpu_sup CPU load and utilization supervision
  - disksup Disk supervision
  - memsup Memory supervision
* erlang-xmerl: This Erlang/OTP package provides functions for exporting XML data to an external format

Signed-off-by: Arnaud Sautaux <arnaud.sautaux@infoteam.ch>

gethostbyname_r is available when _GNU_SOURCE is defined, add a patch to check for it instead of __GLIBC__, build with -D_GNU_SOURCE, bump release number

Signed-off-by: Nicolas Thill <nico@openwrt.org>

- update to latest version (v17.1)
 - add license info
 - add myself as maintainer

Signed-off-by: Nicolas Thill <nico@openwrt.org>