fix for single threaded configurations

[John David Anglin]

> > Not quite true.  The DCE thread environment on hpux10 has all these
> > functions but they have slightly different declararations.  The code
> > as it presently exists won't work with the hpux10 variants.
> 
> Well, I based on this:
> http://www.opengroup.org/onlinepubs/009695399/functions/getpwuid.html
> 
> Issue 5 and 6.

This is hpux10 declaration:

     extern int getpwuid_r(uid_t, struct passwd *, char *, int);

Dave
-- 
J. David Anglin                                  dave.anglin@nrc-cnrc.gc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6602)