compiling x-plor on Irix 6.4

[Ralf W. Grosse-Kunstleve]

Did you copy sgitime_r8000.s to $SOURCE before compiling with -64?
If you use sgitime.s with -64, it is very likely that you get core
dumps.
In any case, there is no benefit in having the 64 bit binary.
X-PLOR cannot use the large address space anyway, since integer
(a.k.a. integer*4) is (mis)used for storing pointers. A -n32 binary
will give you the same performance.
Ralf