martine/ninja — pull request #461 by riannucci (2012-11-10 06:11:10+00:00)
Title: Resource pools for ninja

Basically what was discussed here: https://groups.google.com/forum/#!topic/ninja-build/6oJzx6QI0Vg

I opted for the global section syntax as it's (IMO) the cleanest, easiest to error check, and hardest to get wrong. Specifically, the syntax is:

```
pool some_pool_name
depth = 10

rule foo
...
pool = some_pool_name

# and/or
build file: bar input
pool = some_pool_name
```

I explored the alternate syntaxes on the branches collapsed_noshadow and collapsed_method.

Pull includes docs and a couple tests (the tests pass, too!).

All feedback welcome :smile: