[parrot/parrot] 3a08db: [pmc] rpa enabled unshift optimizations

[GitHub]

  Branch: refs/heads/rurban/rpa-offset-gh1152
  Home:   https://github.com/parrot/parrot
  Commit: 3a08db4f620938179383d969683e5a35ce5c654b
      https://github.com/parrot/parrot/commit/3a08db4f620938179383d969683e5a35ce5c654b
  Author: Reini Urban <rurban at cpanel.net>
  Date:   2014-11-27 (Thu, 27 Nov 2014)

  Changed paths:
    M src/pmc/fixedpmcarray.pmc
    M src/pmc/resizablepmcarray.pmc

  Log Message:
  -----------
  [pmc] rpa enabled unshift optimizations

Still a wrong-free problem with shift fast.
GH #1150