* __fish_complete_subcommand_root now passes arguments to

__fish_complete_subcommand

* sudo:
  - now can be completed bu group and user (-u and -g keys).
  - subcommand completion is fixed

* __fish_complete_proc.fish is added to complete killall command with
  list of running processes

* __fish_complete_tex.fish is updated with common options

* __fish_make_completion_signals.fish is added to make a list of kill
  signals for kill and killall

* completions:
 - minor filetype completions are added for djview, xpdf, mupdf, gv,
   xdvi
 - adduser is copmleted by user and group
 - dlocate and dpkg are completed by packages
 - find: -executable options is added
 - htop: options
 - funced and funcsave are completed by function names
 - ifdown and ifup are copmleted by interfaces
 - kill and killall: options, signals and processes
 - latexmk, ln, nm: options
 - lualatex and xelatex copmletions
 - sudo: -u and -g options
 - wvdial: presets

share/functions/__fish_complete_subcommand_root.fish

@@ -3,6 +3,8 @@
 function __fish_complete_subcommand_root -d "Run the __fish_complete_subcommand function using a PATH containing /sbin and /usr/sbin"
 	set -l PATH_OLD $PATH
 	set PATH /sbin /usr/sbin $PATH
-	__fish_complete_subcommand
+	__fish_complete_subcommand $argv
 	set PATH $PATH_OLD
+
+
 end