Update to version 2.37.

While here mark this package as not requiring any compiler (empty
USE_LANGUAGES variable).

Changes since last packaged version (2.35):

Changes in version 2.37
-----------------------
* Bugfix: With gnu_compat, --foo= will no longer trigger "Option
  requires an argument" but return the empty string.

Changes in version 2.36
-----------------------
**************** WARNING -- EXPERIMENTAL CODE AHEAD ****************

* Parsing options from an arbitrary array
  The entry point GetOptionsFromArray (exported on demand) can be used
  to parse command line options that are not passed in via @ARGV, but
  using an arbitrary array.

    use Getopt::Long qw(GetOptionsFromArray);
    $ret = GetOptionsFromArray(\@myopts, ...);

* Parsing options from an arbitrary string
  The entry point GetOptionsFromString (exported on demand) can be
  used to parse command line options that are not passed in via @ARGV,
  but using an arbitrary string.

    use Getopt::Long qw(GetOptionsFromString);
    $ret = GetOptionsFromString($optstring, ...);

  Note that upon completion, no arguments may remain in the string.
  If arguments may remain, call it in list context:

    ($ret, $args) = GetOptionsFromString($optstring, ...);

  @$args will have the remaining arguments.
**************** END EXPERIMENTAL CODE ****************
* Number values for options may include underscores for readability
  (just like Perls numbers).
* Bugfix for Ticket #19432 (found and fixed by khali).
* Bugfix to make it cooperate with the bignum pragma. Thanks to Merijn
  and Yves.
* Various small fixes to make the test suite run under 5.004_05.
* More examples (skeletons).

(seb)