tests: update after removing of redundant amend commit
Following e8a7c1a0565a, temporary amend commits has been removed impacting all
revision numbers in tests including amend operations.
Update tests case to use description or hashes when possible and update
revisions number when not.
#require test-repo pyflakes
Copied from Mercurial core (60ee2593a270)
$ cd "`dirname "$TESTDIR"`"
run pyflakes on all tracked files ending in .py or without a file ending
(skipping binary file random-seed)
$ hg locate 'set:(**.py or grep("^#!.*python")) - removed()' 2>/dev/null \
> | xargs pyflakes 2>/dev/null