Move MachineRepresentation to machine-type.h and rename to MachineType in preparation for merging it with RepType.

R=bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/456333002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23051 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Enable C++11 tests on windows.

This also adds a landmine as windows bots need a clobber.

BUG=400033
LOG=n
TBR=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/457413003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23052 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Revert "Reland "MIPS: Add support for arch. revision 6 to mips32 port.""

This reverts commit r23050 for breaking runhooks on chromium.

See e.g.:
http://build.chromium.org/p/client.v8/builders/Chrome%20Linux%20Perf/builds/1438/steps/runhooks/logs/stdio

TBR=jochen@chromium.org

Review URL: https://codereview.chromium.org/458983003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23053 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/master'