watch 3.3.10 (from procps-ng)

Updated `watch` to the latest version from the procps-ng project, a
Debian, Fedora and openSUSE fork of procps. It's more up-to-date than
the procps project. In this version it also supports colored output.
watch: add 3.3.10 bottle.
watch: fix trailing whitespace audit.
libepoxy 1.2 (new formula)
libepoxy: add 1.2 bottle.