- Support for setting outgoing IPv4 multicast interface
  (note that only the Linux kernel can do that)
- Some cleaning/dirtying up

It has NO target.

  (some PPC user should review this)
- Don't find canonical build and target (heck, VLC is not a compiler!)

I TOLD YOU TO NOT BOTHER ME WITH YOUR UNCLEAN BUILD TREES.

(well only for libtool and shared libvlc)

Clean your build tree before whining.

And yes, it breaks the mostly-builtin option (obviously).
It also speeds up automake a tiny bit.

* Don't crash on Flac samples that have more channels than we can handle.

Needs to be backported

- Don't handle impossible (and would-be harmless) errors.
- Don't try Source Specific Multicast when not implemented by libc
  (this *includes* Mac OS X on the build bots)