Add tuned powerpc assembler written by IBM and released under a 3-clause
BSD Lisc as part of the perflib project.
http://sourceforge.net/projects/ppcperflib/

Tested the new functions with microbench

Add tuned powerpc assembler written by IBM and released under a 3-clause
BSD Lisc as part of the perflib project.
http://sourceforge.net/projects/ppcperflib/

Tested the new functions with microbenchmarks on a number of different
CPU types, and found that most cpus either benefited greatly, or were
unaffected. Primarily G4 CPU's were unaffected, and all others showed
speedups. My 7044 (POWER3) went from a 70.6 to a 73.2 (thats good) in
bytebench with a complete release built with these. Also passed
regression tests.

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