Delay initiating layout operations for as long as possible.
Make test_wpt params optional

Fixes an exception in `mach test`.
script: Use atom comparison in more places, especially for attributes.

75% improvement in style recalc for Guardians of the Galaxy.
Merge pull request #3316 from pcwalton/use-atoms

script: Use atom comparison in more places, especially for attributes.
Fix doctest errors in rustdoc comments

Mostly this disables doctest for comments that are not actually tests.
Update style unit tests to use atoms

Fixes test bustage from #3316.
Merge pull request #3358 from jdm/thespicemustnotreflow

Delay initiating layout operations for as long as possible.
Merge pull request #3395 from mbrubeck/doctest

Fix unit test failures. r=jdm
Merge pull request #3372 from mbrubeck/wpt-params

Make test_wpt params optional. r=me
Remove most of FlowList

This needs to be reworked for DST.  Until then, DList<FlowRef> will do.
Upgrade to rustc 0.12.0-pre (4d2af3861 2014-09-17 15:51:11 +0000)