Closes#479 by piping STDERR to /dev/null.
Also does much less manipulation of the package list; there are no
packages in any of the archives containing the names that are stripped
out as far as I can see.
* Added FreeBSD's pkg to __fish_print_packages
* Portmaster completes on installed packages and ports
* Options list as per fish_generate_completions, needs to be tidied
up further but will suffice for now
On Gentoo the eix program is MUCH faster than emerge for listing package
names. I've left the emerge code in as a 2nd choice because not every
Gentoo system has eix installed (although they should). Also, the
emerge code didn't seem to produce any output on my system.
Signed-off-by: Grissiom <chaos.proton@gmail.com>