Merge revisions 6611, 6795, 6797 to the 3.0 branch

I added 6611 to this patch since it makes the merge a much cleaner. I
can make another patch only merging 6795+6797, but this will include a
bunch of hand merged stuff that I would love to avoid giving our test
coverage for the 3.0 branch.

Review URL: http://codereview.chromium.org/6480070

git-svn-id: http://v8.googlecode.com/svn/branches/3.0@6804 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

• src/arm/deoptimizer-arm.cc[diff]
• src/arm/lithium-codegen-arm.cc[diff]
• src/assembler.cc[diff]
• src/assembler.h[diff]
• src/disassembler.cc[diff]
• src/full-codegen.cc[diff]
• src/ia32/assembler-ia32.cc[diff]
• src/ia32/assembler-ia32.h[diff]
• src/ia32/deoptimizer-ia32.cc[diff]
• src/ia32/lithium-codegen-ia32.cc[diff]
• src/objects-inl.h[diff]
• src/objects.cc[diff]
• src/objects.h[diff]
• src/runtime.cc[diff]
• src/safepoint-table.cc[diff]
• src/version.cc[diff]
• src/x64/deoptimizer-x64.cc[diff]
• src/x64/lithium-codegen-x64.cc[diff]
• test/mjsunit/regress/regress-1156.js[Added - diff]