Disable -Werror compiler flag so the build can succeed on modern build environment
Regenerated autoconf accordingly
Merged Jakub Stachowski's patches from https://groups.google.com/forum/#!msg/xuggler-users/Dl1sMnCZvLw/m4h6FNzYTXUJ
So far untested.

This is a first attempt at adding support for filters to xuggler. It is also discussed here: https://stackoverflow.com/questions/12744122/adding-filtering-support-to-xuggler
I did not experience any of the issues described with SWIG while merging the patch into this version. Additionally it looks like some of the changes have already been made independently.