3.4 PATCH: Fix libjava Tru64 UNIX V4.0F bootstrap failure with pthreads

[Tom Tromey]

>>>>> "Rainer" == Rainer Orth <ro@TechFak.Uni-Bielefeld.DE> writes:

Rainer> V5.1 changed that to
Rainer> _XOPEN_SOURCE_EXTENDED || (_XOPEN_SOURCE && _OSF_SOURCE) || !_XOPEN_SOURCE

Rainer> We cannot define _XOPEN_SOURCE_EXTENDED since this completely
Rainer> breaks the tree due to conflicting declarations, and need
Rainer> _XOPEN_SOURCE for other reasons.

Can we define _OSF_SOURCE?

Rainer> Ok for mainline?

I think it is fine.  I'd have a preference for the _OSF_SOURCE
solution, if it is possible and advisable -- I really don't know.
It is up to you.

Tom