Log Message:
Update to 0.3.13.

Changelog:
Version 0.3.13 (2010-01-21)
---------------------------

- Fixed documentation location (--docdir in configure)
   * thanks to Chris Mayo for patch
- Moved source code control to Github
- Improvements to build system
- Updated to autoconf 2.60, libtool 2.2, automake 1.10 and Doxygen 1.7.3
- Fix problem with 'extern inline' by changing them to 'static inline'
- Wrote perl script to test output of the frontend
- Changed all debugging messages, writing to stdout to write to stderr
- Removed calls to exit() from libtwolame.
- Added --non-copyright option (which is enabled by default)
- Fix for bad copy/paste of variable assignment.
- Manpage correction
- Changed fopen() options to wb to fix Windows