Revert r19897, r19898 for breaking mac-64 debug.

TBR=dslomov@chromium.org

Review URL: https://codereview.chromium.org/199203002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19901 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Maintain change log file directly on trunk branch in push-to-trunk.

This is another step for deprecating the change log file on bleeding edge.

BUG=
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/196283014

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19902 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Prepare push to trunk.  Now working on version 3.25.11.

R=dslomov@chromium.org
TBR=dslomov@chromium.org

Review URL: https://codereview.chromium.org/196383005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19903 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Remove uses of RangeCanInclude() in flooring division by power of 2.

Port r19877 (17029d3)

Original commit message:
Drive-By-Fix: Improve ARM code generation for flooring division by
power of 2.

BUG=v8:3204
LOG=y
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/195893013

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19904 ce2b1a6d-e550-0410-aec6-3dcde31c8c00