stablerange: use the new cache object in the 'mergepoint' version
Every improvement to the cache should reflect on the stable range from there.
Since we no longer use the basic sort function, we can simplify the inheritance
by dropping one layer.
#require test-repo
$ checkcm() {
> if ! (which check-manifest > /dev/null); then
> echo skipped: missing tool: check-manifest;
> exit 80;
> fi;
> };
$ checkcm
$ cat << EOF >> $HGRCPATH
> [experimental]
> evolution=all
> EOF
Run check manifest:
$ cd $TESTDIR/..
$ check-manifest
lists of files in version control and sdist match