mpv-git: --ytdl is the new shtick
mpv-git: add back libxrandr, lua, smbclient, and libxkbcommon as depends

These are installed regardless, and/or may come in handy.
add vim modelines and remove ident strings here-and-there
gcalcli,razer: small cleanup
add readme
mpv-git: merge upstream PKGBUILD