tests/test-install

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

#!/bin/sh

hg debuginstall