make distclean doesn't remove everything #2689
Description
Running a make distclean in a checkout of Apache CouchDB from git should remove all dependencies in other repos, including:
- config
- b64url
- ets_lru
- khash
- snappy
- docs
- fauxton
- folsom
- hyper
- ibrowse
- jiffy
- mochiweb
- meck
- recon
- bear
It should also remove the rel/couchdb release folder, and any apache-couchdb-... dist tarball/folder.
In short, after running make distclean, the directory should look exactly like it would from a fresh clone.
In working on this, it would be acceptable for the distclean Makefile to shell out to commands like git reset --hard and git clean -ffdx but that's not sufficient to remove the external repo dependencies, since they're in .gitignore.