MIPS: Migrate ArrayLength (Keyed|Named)LoadIC to CodeStub

Port r13458 (e8729cf9)

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/12052011
Patch from Akos Palfi <palfia@homejinni.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@13467 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Migrate FunctionPrototype (Keyed|Named)LoadIC to CodeStub

Port r13459 (491896eb)

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/12049015
Patch from Akos Palfi <palfia@homejinni.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@13468 ce2b1a6d-e550-0410-aec6-3dcde31c8c00