Apply our patches to node 0.10.22

Node has released 2 minor patches to 0.10 recently
- 0.10.21 fixed a DOS bug
- 0.10.22 fixed a memory leak

I've applied the patches we previously had atop 0.10.20 to the v0.10.22-release branch, then added 2 more patches
- making the "exception during stack trace frame decode" formatting more similar to the non-exception case
- using util.inspect in place of JSON.stringify in the assert library to print failure messages (thanks @tullmann)