As the whole GNOME has adopted lzma compression (.xz) as the standard tarball compression, webkit-gtk should do the same. Additional benefits include better compression ratio. Patch upcoming.
Created attachment 112656 [details] bug-71001-use-xz-for-tarballs.patch Unfortunately, I couldn't fully test this patch, as distcheck in trunk seems to be currently broken :S
*** Bug 71021 has been marked as a duplicate of this bug. ***
Comment on attachment 112656 [details] bug-71001-use-xz-for-tarballs.patch Clearing flags on attachment: 112656 Committed r98699: <http://trac.webkit.org/changeset/98699>
All reviewed patches have been landed. Closing bug.