libpano13: update to 2.9.19

[ryandesign (Ryan Carsten Schmidt)]

This patch updates libpano13 to version 2.9.19. I also indicated that the license is GPL-2+ and obfuscated your maintainer email address, which should reduce the chance that your address could be harvested for spam purposes. I updated the master_sites to avoid redirects and fixed the livecheck. I removed the configure arg for setting the mandir, since the current version of the configure script already defaults to that location. I removed configure cflags, cxxflags and ldflags that were added to the port a long time ago, which I don't think are correct anymore and I don't think they're needed anymore. They were added in r72705 purportedly to fix universal building, as reported in #25828, but universal building works fine for me without them.

This update is a prerequisite for updating hugin-app to 2014.0.0.

This update includes a new library version number for libpano13, so all ports linked with libpano13 will need to have their revisions increased to be rebuilt.

If you have no objections, I'm happy to commit this update.

[ryandesign (Ryan Carsten Schmidt)]

proposed patch

[mojca (Mojca Miklavec)]

Cc Me!

[ryandesign (Ryan Carsten Schmidt)]

Committed the update to libpano13 2.9.19 in r133711 (maintainer timeout), and revbumped autopano-sift-c to rebuild it with the new library version in r133712. hugin-app, the only other dependent of libpano13, will be handled in #46721.