oafd change

[Maciej Stachowiak <mjs eazel com>]

Dear OAF users,

I just made a change in OAF which on startup dup2's /dev/null to file
descriptors 0-2 to avoid problems when programs started in the session
have their I/O redirected to a log file. It was needed to fix this
bug:

http://bugzilla.eazel.com/show_bug.cgi?id=6728

However, I have left an out. You may set the OAF_DEBUG_OUTPUT
environment variable to a non-empty value, in which case output from
oafd and components launched by oafd will continue unimpeded.

I figured the Nautilus and Evolution teams deserved extra warning.

Note that gnorba similarly kills stdin/out/err for exe servers, but
does not offer the out.

Hope this change in default behavior is OK with everyone.

Thanks,

Maciej