Make PAGE_SIZE and related quantities signed on sparc64.  (They are signed quantities on every other architecture.)  This change is required in order to move pmap_prefault() out of the pmap and into the machine-independent layer.
Make PAGE_SIZE and related quantities signed on sparc64.  (They are signed
quantities on every other architecture.)  This change is required in order
to move pmap_prefault() out of the pmap and into the machine-independent
layer.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase