Fix stack capture on overflow for Error.stackTraceLimit == Infinity

Bug found by Andrew Paprocki <andrew@ishiboo.com>.

R=mstarzinger@chromium.org, yangguo@chromium.org

Review URL: https://codereview.chromium.org/345533002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21902 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Array.concat: properly go to dictionary mode when required

BUG=chromium:387031
LOG=y
R=danno@chromium.org

Review URL: https://codereview.chromium.org/342333002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21903 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Make object accessors more const-correct.

Port r21897 (1b152ae)

Fix MIPS implementation of READ_DOUBLE_FIELD() to use const parameter.

Original commit message:
Getting closer to making our IsFOO and FOO::cast methods
const-correct...

BUG=
R=gergely@homejinni.com, jkummerow@chromium.org

Review URL: https://codereview.chromium.org/344203005

Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21904 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Support LiveEdit.

Port r21895 (210f7aa)

BUG=368580
LOG=Y
R=jkummerow@chromium.org, palfia@homejinni.com

Review URL: https://codereview.chromium.org/349703002

Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21905 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/master'