- deltext is not necessary before ok, fail, others (it's called

- deltext is not necessary before ok, fail, others (it's called
  automatically)
- [ $# -gt 0 ] instead of [ -n "$1" ]: printf_ sometimes has to accept
  argument lists like "" "a" (where first one is empty string)
- replaced "\b\b\b..." in deltext by "termput hpa $INIT_COL"
- COLOR_INIT=no doesn't mean that all other termcodes shouldn't work -
  COLOR_INIT is now checked only at case "setaf"

svn-id: @731