Several KF6 recipes (kf6-kauth, kf6-kconfig, kf6-kwidgetsaddons)
use autotools and their `autoreconf` step can take 5+ minutes
on a clean cook. Without a per-recipe timeout, a hung cook
blocks the migration script indefinitely and leaves
`source-pristine/` snapshots lingering on disk.
The sed chain we care about runs in the recipe's [build].script
BEFORE the configure step, so a 10-minute window is plenty.
The snapshot at step 2 is already on disk, so even if the
cook is killed by the timeout, the post-cook source state
is still useful for the diff.
Adds test_cook_has_timeout regression test (123 Python tests
total). All 7 test files pass.
vasilito
07f924fe09