Make notmuch-mutt script more portable The -D flag to install (used in the Makefile) is GNU-specific and does not work on BSD distributions (i.e. macOS). Likewise with the xargs -r flag. These changes use portable alternatives to these flags while preserving the exact behavior.
contrib/notmuch-mutt: add install target The main goal here is to be able to install the notmuch-mutt script with an absolute shebang. I have tried to make the notmuch-mutt Makefile use configure information from notmuch if available, but make suitable guesses if not.
contrib: new mutt-notmuch utility for Mutt integration