Add MIPS support to top-level Makefile

Add MIPS support to top-level Makefile

For now, MIPS targets are not included in the "all", "release", "debug" and corresponding ".check" convenience targets, but they can be built explicitly (e.g. "mips.release.check").

Committed: http://code.google.com/p/v8/source/detail?r=9943

[Jakob Kummerow, 2011-11-09 16:05:31]

PTAL.

[Yang, 2011-11-09 16:07:45]

LGTM if sufficiently tested.

[Sven Panne, 2011-11-09 16:10:20]

http://codereview.chromium.org/8510014/diff/1/Makefile
File Makefile (right):

http://codereview.chromium.org/8510014/diff/1/Makefile#newcode150
Makefile:150: --arch=$(shell echo $(DEFAULT_ARCHES) | sed -e 's/ /,/g') \
No need for sed, use subst:
http://www.gnu.org/s/hello/manual/make/Syntax-of-Functions.html

[Jakob Kummerow, 2011-11-09 16:20:03]

On 2011/11/09 16:10:20, Sven wrote:
> http://codereview.chromium.org/8510014/diff/1/Makefile
> File Makefile (right):
> 
> http://codereview.chromium.org/8510014/diff/1/Makefile#newcode150
> Makefile:150: --arch=$(shell echo $(DEFAULT_ARCHES) | sed -e 's/ /,/g') \
> No need for sed, use subst:
> http://www.gnu.org/s/hello/manual/make/Syntax-of-Functions.html

The space/comma hack required for that is pretty ugly, making me prefer the
shell command.