Log Message:
Update lang/erlang to 18.2.1.

erlang 18.2.1

Due to a bug in the handling of paths on windows none of the following
would work with paths containing a space:

- ct_run
- dialyzer
- erlc
- escript
- typer

This also contains a fix for HiPE enabled emulator for FreeBSD.

erlang 18.2

- ssl: Add configurable upper limit for session cache.
- erts: Add function enif_getenv to read OS environment variables in
  a portable way from NIFs.
- kernel: Add {line_delim, byte()} option to inet:setopts/2 and
  decode_packet/3
- ssh: The 'ecdsa-sha2-nistp256', 'ecdsa-sha2-nistp384' and
  'ecdsa-sha2-nistp521' signature algorithms for ssh are implemented.
  See RFC 5656.
- ssh: The ssh:daemon option dh_gex_groups is extended to read a user
  provided ssh moduli file with generator-modulus pairs. The file is
  in openssh format.
- Thanks to 41 different contributors!