Remove unnecessary allocation in width-computation.
Move common macros into a new crate (fixes #1882)
Watch for test failures, not just I/O errors.
auto merge of #1963 : jdm/servo/revert, r=jdm

This reverts commit f1394e3ffcd5ce97f307a38237ca05b1808ad71f.
auto merge of #1953 : pradeep90/servo/fix-width-computer-allocation, r=pcwalton

This fixes #1928
Make JS<T>::clone inline.(fixes #1955)
Remove |unused| field from DOMClass.(fixes #1960)
auto merge of #1967 : lpy/servo/issue1960, r=Ms2ger

see #1960
auto merge of #1965 : jdm/servo/harnessfix, r=Ms2ger
Annotate 'inline' to TCast::to/to_unchecked/from.
auto merge of #1947 : saneyuki/servo/cast, r=jdm

follow up https://github.com/mozilla/servo/pull/1864#issuecomment-37109672
auto merge of #1966 : lpy/servo/issue1955, r=jdm

see #1955
Refactor assign_height and assign_width for block flow.
Add fixed table test cases
Construct table-related flow and calculate fixed layout
Support a part of anonymous table(step 1-1, 1-2, 2).
Not Covered: step 1-3, 1-4, 3-1, 3-2
*Spec: http://www.w3.org/TR/CSS21/tables.html#anonymous-boxes
Remove some unnecessary transmutes.

These can either be done by implicit `&` -> `*` coercions, explicit `*`
-> `*` casts, or an explicit `&*x` `*` -> `&` re-borrow (which is still
unsafe, but significantly more controlled compared to a `transmute`).
Set a name for WorkQueue tasks (fixes #1830)
auto merge of #1958 : mbrubeck/servo/macro-crate, r=kmcallister

This moves the bitfield! macro into a new shared `macros` crate as suggested in #1882.
auto merge of #1973 : june0cho/servo/table_rebase, r=larsbergstrom,metajack

This is a rebase of #1548 on recent master.

There have been many changes since #1548 is first uploaded, so I'm creating new PR.
This PR includes:
 - construction of table-* flows (table-wrapper, table-caption, table, table-rowgroup, table-row, table-cell)
 - fixed-layout table calculation
 - a part of anonymous table object implementation 
[CSS 2.1, 17.2.1](http://www.w3.org/TR/CSS21/tables.html#anonymous-boxes) (Step 1-1, 1-2, Step 2)