Merged r17459, r17462, r17474 into 3.20 branch.

Add missing negative dictionary lookup to NonexistentHandlerFrontend

Restore intended LoadIC behavior for JSBuiltinsObject

Proper fix for the issue exposed by r17459

BUG=v8:2980
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/99923008

git-svn-id: https://v8.googlecode.com/svn/branches/3.20@18320 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merged r17800, r17801 into 3.20 branch.

Limit the size for typed arrays to MaxSmi.

Limit size of dehoistable array indices

BUG=319722,chromium:319835,chromium:319860
R=yangguo@chromium.org

Review URL: https://chromiumcodereview.appspot.com/115013003

git-svn-id: https://v8.googlecode.com/svn/branches/3.20@18322 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merged r17432, r17526, r17545, r17620, r17747 into 3.20 branch.

Do not remove HAdd with zero if the other operand is a double.

Age ICs on context dispose notification.

Fix y-umlaut to uppercase.

Fix potential assertion failure in ConvertCase.

Fix duplicate check in DependentCode::Insert.

BUG=309723,v8:2984,318454
R=yangguo@chromium.org

Review URL: https://chromiumcodereview.appspot.com/109213005

git-svn-id: https://v8.googlecode.com/svn/branches/3.20@18325 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/3.20' into 3.20