Use `parse_html` in DOMParser.
auto merge of #4415 : ChrisParis/servo/parse_html, r=jdm

For https://github.com/servo/servo/issues/4362. This is a simple fix that avoids redesigning task_state. This doesn't track nesting depth, but it wasn't clear what would use the nesting depth if we tracked it. Maybe this is enough.
layout: Implement `empty-cells` per CSS 2.1 § 17.6.1.1.
Restore glutin close on escape functionality. Also fix linux compile error.
auto merge of #4400 : pcwalton/servo/empty-cells, r=SimonSapin

r? @SimonSapin
layout: Implement `caption-side` per CSS 2.1 § 17.4.1.

`caption-side` is used by 4% of pages by number of loads.
auto merge of #4404 : pcwalton/servo/caption-side, r=mbrubeck

`caption-side` is used by 4% of pages by number of loads.

r? @mbrubeck
compositing: Implement `cursor` per CSS3-UI § 8.1.1 in the CEF/Mac port.

I'm not sure how we want to handle Linux cursors, and GLFW has no
ability to set cursors (short of disabling it and managing it yourself).
auto merge of #4358 : pcwalton/servo/cursor, r=mbrubeck

I'm not sure how we want to handle Linux cursors, and GLFW has no
ability to set cursors (short of disabling it and managing it yourself).

If you test this in the wild you will probably hit #4357 until that PR lands.
auto merge of #4419 : glennw/servo/fix-glutin-esc, r=metajack
Rename the PrototypeList enums to fix case build warnings.
Have 'mach build' pass arbitrary arguments to Cargo.

Duplicating all of Cargo’s argument parsing in mach is silly.
Remove usage of the deprecated std::num::Zero trait.
Remove usage of deprecated HashMap::get_copy
Simplify util::range::RangeIndex to always require std::num::Int,

and fix remaining warnings.
auto merge of #4420 : servo/servo/fix-warnings, r=Ms2ger
Update layer bounds on resize

This fixes a bug where fixed-position layers are not repositioned when the
window is resized.
auto merge of #4412 : mbrubeck/servo/fixed-layer-resize, r=mrobinson

This fixes a bug where fixed-position layers are not repositioned when the
window is resized.  This can be reproduced with any `position: fixed` element with a `right` or `bottom` position.  I'm not sure how to reftest this, though.

r? @mrobinson
layout: Implement `border-spacing` per CSS 2.1 § 17.6.1 and the legacy
`cellspacing` attribute per HTML5 § 14.3.9.

Table layout code has been refactored to push the spacing down to
rowgroups and rows; this will aid the implementation of
`border-collapse` as well.