Merge branch 'maint'

* maint: config: add test cases for empty value and no value config variables. cvsimport: have default merge regex also match beginning of commit message git clone -s documentation: force a new paragraph for the NOTE status: suggest "git rm --cached" to unstage for initial commit Protect get_author_ident_from_commit() from filenames in work tree upload-pack: Initialize the exec-path. bisect: use verbatim commit subject in the bisect log git-cvsimport.txt: fix '-M' description. Revert "pack-objects: only throw away data during memory pressure"