i18n support for mozilla apps

[Jose M Rodriguez]

Hi,

First preliminary works to i18n support for mozilla/firefox/thunderbird

- mozilla.
 a version of ${FILESDIR}/mozilla.sh with i18n support

- firefox
 a brand new ${FILESDIR}/firefox.sh with i18n support
 for use instead of the actual softlink.

- thunderbird
 a script in the way of firefox.sh may be worked out

scripts attached.  Not directly usable, but easy to test and
make part of actual mozilla ports

comments on this welcome

--
  josemi