[Libreoffice] Gettext patch

[Tor Lillqvist]

> I wonder if we want to introduce gettext as an internal /
> self-built & packaged dependency on Windows -

We (or "they") already do this, the librsvg stack dragged in for example gettext, which gets built on Windows.

(Although when using the bundled librsvg stack, that is just a silly dependency, as the message catalogs for the libraries in that stack are not included in the install set, etc, so the use of gettext() etc in the librsvg stack is fairly pointless.)

For Windows, I think we would want to patch libintl to use memory mapped .mo files, like it does on Unix.

--tml