Fix printf formatting.

TBR=hpayer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/420273002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22650 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Regression test for chromium:388880 added.

BUG=chromium:388880
LOG=N
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/424693006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22652 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
I said, skip long-running mjsunit/array-functions-prototype-misc test.

TBR=danno@chromium.org

Review URL: https://codereview.chromium.org/426683002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22653 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge branch 'gbl' into mips64-merge
MIPS64: Presubmit clean-up after r6 changes.