Arch Linux

Summary and Info:

There are some completions missing when using zsh. Some of the missing ones are: "--arch, --debug, --confirm, --gpgdir" which are missing everywhere. On top of that upgrade mode is missing --ignore* --asdeps --asexplicit and --print-format, sync and query modes are missing --quiet, remove mode is missing -u -p -d --unneeded --nodeps --print-format. I may have missed some, but my patch should fill in all missing completions in /usr/share/zsh/site-functions/_pacman, though I don't know how to make zsh complete string patterns for --print-format.

Steps to Reproduce:

1. Open zsh and enable completions
2. Enter "pacman -S<Tab>" (any other option can be used)
3. Some options are not listed (--arch for exapmle)