[MERGE][1.14][355273] Fix OSX test failures

[Vincent Ladeuil]

>>>>> "jfroy" == Jean-Francois Roy <bahamut at macstorm.org> writes:

    jfroy> Mac OS X 10.5's Terminal can optionally set LANG.

Wow, shiny preferences or Terminal ! Never noticed it (I still
use 10.4 most of the time though).

    jfroy> I am not sure what the default setting is, however (it
    jfroy> may very well be disabled by default).

Seems checked by default, yet, LANG is not set with UTF-8
selected as 'Character encoding'.

    jfroy> Previous versions of Mac OS X's Terminal did not do
    jfroy> this at all.

Indeed.

But bzr can be used even without a terminal, so that's not the
only case to take into account.

We had (and still have) problems on OSX with encodings (tty *and*
fs), that may need to be revisited (see bzr and osutils), but
anyway, bzr.dev at 4216 seems to be what triggered all the problems
so with all these failures I hope to be able to nail it for good
(at least come back to previous state where we know some fs
encodings will still be problematic but the ones used in test
suite (AIUI, jam knows all the details here)).

I will check with previous versions of bzr as it seems that my
setup has hidden some bugs here for some time...

    Vincent