mq: prepare a strip extension for extraction
Strip will lives in its own extension. The extension is surprisingly called
`strip`. (as discussed in
issue3824) The `mq` extension force the use of the
strip extension when its enabled. This will both necessary for backward
compatibility (people expect `mq` to comes with strip) and become some utility
function used by `mq` will move in the strip extension.
mq: have the strip command functionnal on repo without mq
This is the last step before being able to extract `strip` in its own extension.
The changes are made in mq to allow a move only extraction without touching a
line of code.
mq: drop the use of mq.queue.qparent in mq.queue.strip
Same as in the previous changeset, rev is never `None`. We can just copy the two
relevant lines in in `queue.strip`. This help having `queue.strip` independent
from `queue`. One further step toward the extraction of `strip` in an independent
extension. (As discussed in
issue3824).
mq: drop the use of mq.queue.qparent in mq.strip
In this case, rev is never `None`. We can just copy the two relevant lines in
in `strip`. This help having `strip` independent from `queue` one
further step toward its extraction in an independent extension. (As
discussed in
issue3824).