Add support for movw/movt immediate loads to BackEdgeTable on ARM to enable ool constant pool.

R=rodolph.perfetta@arm.com, ulan@chromium.org

Review URL: https://codereview.chromium.org/190833002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20023 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Handlification of ArrayConstructorCommon().

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/201303009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20024 ce2b1a6d-e550-0410-aec6-3dcde31c8c00