Merged r20087, r20137, r20155, r20158, r20197 into 3.24 branch.

Fix polymorphic keyed loads for SLOPPY_ARGUMENTS_ELEMENTS

Fix polymorphic hydrogen handling of SLOPPY_ARGUMENTS_ELEMENTS

Ensure that lazy deopt sequence does not override calls.

Visit return statement of inlined function in value context.

Correctly convert micro-sign to its upper case.

BUG=chromium:350867,chromium:354391,354433,354357,355485
LOG=N
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/222003005

git-svn-id: https://v8.googlecode.com/svn/branches/3.24@20447 ce2b1a6d-e550-0410-aec6-3dcde31c8c00