Add missing links from GlobalPropertyCell to dependent_code

It produced orphan DependentCode nodes because links were not created explicitly in ExtractPropertyCellReferences and IndexedReferencesExtractor was disabled for ProperyCells.

R=danno@chromium.org, loislo@chromium.org

Review URL: https://codereview.chromium.org/19368002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15694 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Fix bug introduced by r15640.

This bug causes segfault in the octane benchmark,
because the deoptimization entries do not fit in the
deopt table.
This change increases the table entry size.

TEST=octane benchmark

BUG=

Review URL: https://codereview.chromium.org/19381004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15695 ce2b1a6d-e550-0410-aec6-3dcde31c8c00