Change -march=pentium4 to -march=pentium3 when CPUTYPE==p4, because gcc 3.2 is known to produce broken code with -march=pentium4.  Add a note explaining this. This should be removed when we update to gcc 3.3 or the bug is otherwise fixed.
Change -march=pentium4 to -march=pentium3 when CPUTYPE==p4, because gcc 3.2 is
known to produce broken code with -march=pentium4.  Add a note explaining this.
This should be removed when we update to gcc 3.3 or the bug is otherwise fixed.

Approved by:	re

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