The source project of this merge request has been removed.
bzgrep, build: use `grep -E/-F` instead of `egrep` and `fgrep`
egrep
and fgrep
have been deprecated in GNU grep since 2007, and in
current post 3.7 Git they have been made to emit obsolescence warnings:
https://git.savannah.gnu.org/cgit/grep.git/commit/?id=a9515624709865d480e3142fd959bccd1c9372d1