Merged r16012, r16014, r16037, r16042, r16082, r16085, r16101, r16102, r16106 into trunk branch.

Never define 'DEBUG' for non-v8 code

Fix incorrect #ifdef statements for I18N support.

IsNearDeath needs to include pending nodes

Disable parallel recompilation for --trace-hydrogen-stubs.

Fix Array index dehoisting.

MIPS: Fix Sunspider 1.0/crypto-aes.

Handle Symbols in the LBranch instruction on x64.

Removed wrong ASSERTs on MIPS.

Check for empty handle in JSON stringifier

BUG=264203
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/22870002

git-svn-id: https://v8.googlecode.com/svn/trunk@16152 ce2b1a6d-e550-0410-aec6-3dcde31c8c00