[pmc] rpa: shift optim, use data struct directly
[pmc] rpa: shift optim, use data struct directly

do not use seperate SELF and temp values for the attrs.
2.40% faster on my mac, %ebp addressing for data.

parrot/parrot,youprofit/parrot,youprofit/parrot,tkob/parrot,tkob/parrot,tkob/parrot,youprofit/parrot,youprofit/parrot,tkob/parrot,youprofit/parrot,youprofit/parrot,parrot/parrot,parrot/parrot,tkob/parrot,youprofit/parrot,parrot/parrot,tkob/parrot,tkob/parrot,parrot/parrot,youprofit/parrot,tkob/parrot