Contribution of PowerPC port (continuation of 422063005 and 817143002). This patch covers
the key changes needed to the common files needed to support AIX. Subsequent
patches will cover:
- changes to update the ppc directories so they are current with the changes
in the rest of the project.
- remaining AIX changes not resolved by 4.8 compiler
- individual optimizations for PPC

This is based off of the GitHub repository
https://github.com/andrewlow/v8ppc

R=danno@chromium.org, svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/866843003

Cr-Commit-Position: refs/heads/master@{#26343}

Review URL: https://codereview.chromium.org/10973003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12585 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This test sets the umask on a per-process basis and hence cannot be
used in multi-threaded runs.

R=yangguo@chromium.org
TEST=mjsunit/d8-os

Review URL: https://chromiumcodereview.appspot.com/9372018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10655 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

We cannot use chdir to set the working directory on a per-isolate basis,
hence we need to specify absolute directories instead for this test to
work properly on multi-threaded runs.

R=yangguo@chromium.org
TEST=mjsunit/d8-os

Review URL: https://chromiumcodereview.appspot.com/9348051

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10639 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This test deleted its working directory and then tried to run several
shell commands which caused a failure on nfs.

Changes:
-TEST_DIR is only removed at the very end of the test
-the working directory is changed to /tmp at the beginning so that
 every iteration (when running with --stress-opt) has a valid working directory

BUG=
TEST=

Review URL: http://codereview.chromium.org/8936004
Patch from Daniel Kalmar <kalmard@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10240 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/7835040

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9154 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Because of stress testing there may be parallel instances of the test
running, which makes it fail when using a hardcoded test dir
name. Adding a random suffix helps. It'd be nicer to add something
like pid, but there doesn't seem to be an easy way of getting it.

R=yangguo@chromium.org

Review URL: http://codereview.chromium.org/7491057

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8848 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

* Remove the non-working methods from the os object on d8 on Windows
so you can test for their presence with if (os.system).
* Add a test (not run by default since it only works on d8).
* Fix incorrect use of wait that left defunct processes (zombies).
Review URL: http://codereview.chromium.org/56107

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1650 ce2b1a6d-e550-0410-aec6-3dcde31c8c00