FLAC update in F-7

[Bastien Nocera]

Heya,

Just a heads-up that I'm currently compiling FLAC 1.2.1 in Fedora 7 to
fix CVE-2007-4619.

Hopefully, it won't break too much (same patches and same code as seen
in the devel/F-8 branch).

See https://bugzilla.redhat.com/show_bug.cgi?id=332571

The first person to complain that I should have backported the security
fixes gets to do the backport themselves :)