.xz for daily snapshots

[Jan Kratochvil]

Hi Joel,

while it is a great improvement the new release got its .xz variant
	ftp://sourceware.org/pub/gdb/releases/gdb-7.8.tar.xz
	ftp://sourceware.org/pub/gdb/releases/gdb-7.8.1.tar.xz
the snapshots are still available only as .bz2 - could they be easily fully
switched to .xz?
	ftp://sourceware.org/pub/gdb/snapshots/current/gdb-7.8.50.20141222.tar.bz2


Thanks,
Jan