Merge branch 'kill' of git://github.com/kerolasa/lelux-utiliteetit

* 'kill' of git://github.com/kerolasa/lelux-utiliteetit:
  kill: move sigqueue inputs to control struct
  kill: add parse_arguments() function
  kill: tell what is wrong rather than output usage()
  kill: use control structure to pass user input to functions
  kill: deprecat invocation as 'pid' command name
  kill: make usage() not to return
  kill: move magic numbers in beginning of the file
  kill: flip all comparions to be in smaller - greater order
  kill: fix coding style