Move configuration of ResourceConstraints to Isolate construction

We can only set resource constraints before the isolate is initialized.
Since in the future, we want to initialize isolates at construction
time, we need to set constraints there.

It's possible to later modify the stack limit, so introduce an
Isolate::SetStackLimit method for that.

The SetResourceConstraints method will be deprecated. Users should pass
ResourceConstraints to Isolate::New, and use Isolate::SetStackLimit to
later modify the stack limit.

BUG=none
R=svenpanne@chromium.org
LOG=y

Review URL: https://codereview.chromium.org/559993005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23964 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Introduce DONE state in idle notification handler.

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/577573002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23965 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fixed int vs. uintptr_t confusion (plus some cleanup on the way).

BUG=v8:3556
LOG=y
R=jochen@chromium.org

Review URL: https://codereview.chromium.org/567573004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23966 ce2b1a6d-e550-0410-aec6-3dcde31c8c00