Merged r18000, r18013, r18298, r18319 into 3.22 branch.

Merged r18000, r18013, r18298, r18319 into 3.22 branch.

Restore saved caller FP registers on stub failure and preserve FP registers on NotifyStubFailure.

Invalidate embedded objects in optimized code if it was marked for deoptimization.

Initialize Date parse cache with SMI instead of double to workaround sharing mutable heap numbers in snapshot.

Fix NotifyStubFailureSaveDoubles generation for ia32.

BUG=320532, v8:2996, 280531
R=svenpanne@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=18496

[ulan, 2014-01-08 14:16:27]

Please take a look. All except src/x64/lithium-codegen.cc applied cleanly.

[Sven Panne, 2014-01-08 14:26:56]

LGTM (rubberstamped)

[ulan, 2014-01-08 15:22:19]

Committed patchset #2 manually as r18496 (presubmit successful).