rebase: keep original mq patch format (Issue1574)
Rebase now doesn't make assumptions about which format has been
used for a mq patch (git or normal).
Before finalizing a patch it keeps track of the original format,
by reading its header, and then restores the format when reimporting
it.
This way it also allows for having mixed styles.
Note: this version corrects a failure in the test
adding a
updating working directory
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
% expect error, cloning not allowed
abort: authorization failed
requesting all changes
% serve errors
% expect error, pulling not allowed
abort: authorization failed
pulling from http://localhost/
searching for changes
% serve errors