Building 1.5.2 on SGI IRIX 6.5

[Mona Wong]

Hi:

	I ran into a problem building Python 1.5.2 on SGI IRIX 6.5, found a 
solution and just wanted to share this with others and/or the program
maintainers to correct ...

	SGI IRIX 6.5 now requires that you include sys/select.h *before* you
include unistd.h.  If you don't, you'll get an error message about fd_set.

	If anyone needs any more info, feel free to email me privately.

Cheers,

Mona