[PATCH] REPORTING-BUGS: track regressions

Add a new record to the REPORTING-BUGS template: "Most recent kernel version
which did not have the bug:".  So we can spot regressions more easily.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>