Add internationalization support to "Command completed." string.

[Peter Pan]

The patch is for the vte.sh of "vte-profile" package, I extracted
the vte.sh from the vte-profile RPM package.

Its gettext TEXTDOMAIN is vte-profile, 2 strings is able to translate
and the patch has been tested with no problems.

--- Below is the patch ---

--- vte_original.sh	2019-03-05 05:49:30.000000000 +0800
+++ vte.sh	2019-03-08 21:40:39.535164773 +0800
@@ -1,5 +1,6 @@
 # Copyright © 2006 Shaun McCance <shaunm(a)gnome.org&gt;
 # Copyright © 2013 Peter De Wachter <pdewacht(a)gmail.com&gt;
+# Copyright © 2018 Yi-Jyun Pan <pan93412(a)gmail.com&gt;
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -14,6 +15,10 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>;.
 
+# Let's load gettext!
+export TEXTDOMAIN="vte-profile"
+. gettext.sh
+
 # Not bash or zsh?
 [ -n "$BASH_VERSION" -o -n "$ZSH_VERSION" ] || return 0
 
@@ -42,7 +47,7 @@
 # Print a warning so that anyone who's added this manually to his PS1 can adapt.
 # The function will be removed in a later version.
 __vte_ps1() {
-  echo -n "(__vte_ps1 is obsolete)"
+  echo -n $(eval_gettext "(__vte_ps1 is obsolete)")
 }
 
 __vte_osc7 () {
@@ -54,7 +59,7 @@
   command="${command//;/ }"
   local pwd='~'
   [ "$PWD" != "$HOME" ] && pwd=${PWD/#$HOME\//\~\/}
-  printf '\033]777;notify;Command completed;%s\033\\\033]0;%s@%s:%s\033\\%s'
"${command}" "${USER}" "${HOSTNAME%%.*}" "${pwd}"
"$(__vte_osc7)"
+  printf '\033]777;notify;%s;%s\033\\\033]0;%s@%s:%s\033\\%s' $(eval_gettext
"Command completed.") "${command}" "${USER}"
"${HOSTNAME%%.*}" "${pwd}" "$(__vte_osc7)"
 }
 
 case "$TERM" in