This is more in keeping with modern practice, and is a first step towards
porting to Win64 (which has sizeof(pointer) > sizeof(long)).
Tsutomu Yamada, Magnus Hagander, Tom Lane
that OS=hpux is the same as CPU=hppa. First steps at doing this.
With these patches, we still work on hppa with either gcc or HP's cc.
We might work on hpux/itanium with gcc, but I can't test it. Definitely
will not work on hpux/itanium with non-gcc compiler, for lack of spinlock
code.