port: truecrypt 5.1a, need some testers

[Stephan Fiebrandt]

This updated port should build the latest truecrypt 5.1a on freebsd. It
depends on wxgtk28 with unicode. The NOGUI version dpes also require wx
base libraries. So wxgtk28-unicode is marked as dependency.

I have done some load test on today's 7-STABLE amd64, however it needs
more testing also under i386 as my machine is heavy patched and my i386
is 8-CURRENT right now (there it works too).
Don't forget to start fuse before running truecrypt.
Port can be found at: http://nsx.de/truecrypt-5.1a.tar.gz

Stephan