Release escort 0.3.1 and esidl 0.3.1

[ShikiOkasaka]

Platforms to be checked:

• [ ] Fedora 17
• [x] Fedora 18 (escort.x86_64 c9e843deef2d32e316ef095faa4afaaec1557584, escort.i686 98e3552fa693d0e7571c3416306d99ccc6afb0ba)
• [x] Ubuntu 12.10 (i386 and amd64 04042e5763d1e3982796bc24e560c38ed3efec56)
• [x] Mac OS X Lion/Mountain Lion (lion 04042e5763d1e3982796bc24e560c38ed3efec56)

[ShikiOkasaka]

Let's drop support Fedora 17 this time. It's time to getting ready to support Fedora 19: http://lists.fedoraproject.org/pipermail/announce/2013-April/003148.html

[ShikiOkasaka]

https://groups.google.com/d/msg/es-operating-system/RUD1m9X1Yn8/unYgciMSMkMJ