ARM: Port new version of ParallelMove's GapResolver to ARM.  Fix error in vstr(DoubleRegister, MemOperand), where it was implemented as a vldr, in r6830.
Review URL: http://codereview.chromium.org/6311010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6839 ce2b1a6d-e550-0410-aec6-3dcde31c8c00