localrepo: prevent executable-bit only changes from being lost on amend
If you have just executable-bit change and amend it twice it will vanish:
* After the first amend the commit will have the proper executable bit set
in manifest but it won't have the the file on the list of files in
changelog.
* The second amend will read the wrong list of files from changelog and it
will copy the manifest entry from parent for this file.
* Voila! The change is lost.
This change repairs the bug in localrepo causing this and adds a test for it.
#require test-repo slow debhelper
Ensure debuild doesn't run the testsuite, as that could get silly.
$ DEB_BUILD_OPTIONS=nocheck
$ export DEB_BUILD_OPTIONS
$ OUTPUTDIR=`pwd`
$ export OUTPUTDIR
$ cd "$TESTDIR"/..
$ make deb > $OUTPUTDIR/build.log 2>&1
$ cd $OUTPUTDIR
$ ls *.deb
mercurial-common_*.deb (glob)
mercurial_*.deb (glob)
main deb should have .so but no .py
$ dpkg --contents mercurial_*.deb | egrep '(localrepo|parsers)'
* ./usr/lib/python2.7/dist-packages/mercurial/parsers*.so (glob)
mercurial-common should have py but no .so or pyc
$ dpkg --contents mercurial-common_*.deb | egrep '(localrepo|parsers)'
* ./usr/lib/python2.7/dist-packages/mercurial/localrepo.py (glob)