mozilla/servo — pull request #917 by larsbergstrom (2013-09-12 18:04:47+00:00)
Title: Enable recovery from failure of a task within an individual pipeline

Pipeline construction now creates a task that supervises all of the child tasks created by script, render, and layout. If any of those fail, it sends a message back to the constellation, which re-creates the pipeline and threads it into the appropriate spot in either the FrameTree or set of pending frame updates.

Also, turn on debug_info for symbols in the Makefile.