[Python-Dev] problems with SUSv2 compatibility defines

[Sjoerd Mullender]

The new defines in Python.h for SUSv2 compatibility seriously hamper
compilation on SGI IRIX.

The problem is that defining _XOPEN_SOURCE causes a number of common
but non-standard features to be removed.  In particular, ctermid_r and
altzone are no longer defined.  The former causes a warning
(assignment of int-returning function to char *), the latter causes an
error (altzone not defined).
Something needs to be done about this but I don't know what since I
don't know why the defines were necessary.

-- Sjoerd Mullender <sjoerd.mullender@oratrix.com>