Log Message:
Update to 1.2300
Add LICENSE

Upstream changes:
1.2300  2012-07-20

- Doh, fix the repo & bugtracker info in the META files.

1.2200  2012-07-09

- Explicitly require Test::More 0.88+ for tests.

1.2100  2012-07-09

- A seconds value greater than 59 but less than 60 caused timegm() and
  timelocal() to croak. Now we allow any value that's less than 60. RT #78189.

1.2000  2011-01-02

- Release 1.1902 as a stable version without any further chances.

1.1902  2010-12-16  TRIAL RELEASE

- Merge all changes from blead perl.
- Try to restore compatibility with older perls, which don't have a 64bit
  capable localtime/gmtime.