bundle: do no check the changegroup version if no changegroup is included
We don't need to check the compatibility of something we will not use.
In practice this was getting in the was of `streamv2` bundles on a narrow
repository as the 'cg.version=02' value was rejected by this checks.
$ hg init repo
$ cd repo
$ echo a > a
$ hg ci -Am0
adding a
$ hg -q clone . foo
$ touch .hg/store/journal
$ echo foo > a
$ hg ci -Am0
abort: abandoned transaction found
(run 'hg recover' to clean up transaction)
[255]
$ hg recover
rolling back interrupted transaction
(verify step skipped, run `hg verify` to check your repository content)
recover, explicit verify
$ touch .hg/store/journal
$ hg ci -Am0
abort: abandoned transaction found
(run 'hg recover' to clean up transaction)
[255]
$ hg recover --verify -q
recover, no verify
$ touch .hg/store/journal
$ hg ci -Am0
abort: abandoned transaction found
(run 'hg recover' to clean up transaction)
[255]
$ hg recover --no-verify
rolling back interrupted transaction
(verify step skipped, run `hg verify` to check your repository content)
Check that zero-size journals are correctly aborted:
#if unix-permissions no-root
$ hg bundle -qa repo.hg
$ chmod -w foo/.hg/store/00changelog.i
$ hg -R foo unbundle repo.hg
adding changesets
transaction abort!
rollback completed
abort: $EACCES$: '$TESTTMP/repo/foo/.hg/store/.00changelog.i-*' (glob)
[255]
$ if test -f foo/.hg/store/journal; then echo 'journal exists :-('; fi
#endif