Skip test properly if we can't change TZ

On Windows, with the test modules bundled with 5.14.2, it was printing
the skip message but exiting 255, causing cpan to refuse to install it.
Handle unimplemented POSIX::tzset

Should fix
http://www.cpantesters.org/cpan/report/3b1b9d2d-6d69-1014-a93d-93423e5e3ebd
Removed caching in tz_local_offset and added tests to ensure it is working.
typo fix
typo fixes
typo fixes
Roll released 2013.0912
Add travis
Accept \b instead of \s for terminating time strings
Allow "Sept"
subsecond parses longer than six digits
Roll release 2013.0913
Change NAME to Time::ParseDate
Replace CHANGELOG with Changes, roll release 2013.0917
oops, forgot part of the release process
Merge branch 'patch-2' of https://github.com/dsteinbrunner/Time-modules into dsteinbrunner-patch-2
Type-o fixes
Merge branch 'skipping' of https://github.com/madsen/Time-modules into madsen-skipping
Release 2013.0920
Fix bug https://rt.cpan.org/Ticket/Display.html?id=90343