Fix Android V8 path for testing on devices.

This allows to run tests in production Android builds.

R=yangguo@chromium.org

Review URL: https://chromiumcodereview.appspot.com/18087002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15371 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix zone usage within LAllocator.

Previously all allocations in the register allocator were done on the
chunk (and graph) zone, even those that did not need to survive past
the register allocation. Now only allocations that need to survive
use the chunk zone, all other allocations use a separate zone local
to the LAllocator.

Depends on https://codereview.chromium.org/18022002

R=danno@chromium.org
BUG=

Review URL: https://codereview.chromium.org/17553004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15372 ce2b1a6d-e550-0410-aec6-3dcde31c8c00