script: Inline some hot functions used in flow constructions.

9% improvement in style recalc on the rainbow page.
Remove some dead code.
Rename make_url/current_url to parse_url/base_url, to align with spec terminology.
Implement document.createProcessingInstruction

Spec:
http://dom.spec.whatwg.org/#dom-document-createprocessinginstruction

This is a sub-task for #1428.
auto merge of #1622 : brunoabinader/servo/document-createprocessinginstruction, r=Ms2ger

PR #1620 adds ProcessingInstruction DOM interface.

Spec:
http://dom.spec.whatwg.org/#dom-document-createprocessinginstruction

This is a sub-task for #1428.
Provide AbstractDocument::from_node(node: AbstractNode)

TSIA.
auto merge of #1634 : brunoabinader/servo/document-fromnode, r=jdm

TSIA.

@jdm mentioned to use ```AbstractDocument::from_box``` internally, though.
add case of merge inline info & modify ref test
auto merge of #1577 : ksh8281/servo/inline_add2, r=larsbergstrom

there is a issue when TextRunScanning.
this is for 
```
<span style="background:red;font-size:35px;border: black solid 15px">
        <span style="background:purple; 20px solid">
            <img src="test.jpeg" style="border:blue 30px solid;" />
        </span>
</span>
```
this case. left border of "img" is missing
Remove unused Reflector::get_rootable.
auto merge of #1608 : SimonSapin/servo/url, r=metajack

Align with spec terminology.
auto merge of #1637 : Ms2ger/servo/get_rootable, r=pcwalton
Reduce copying on parse_url() call sites.
auto merge of #1642 : saneyuki/servo/1535, r=SimonSapin

this will fix #1535

r?
Rename "get_applicable_declarations" to "push_applicable_declarations".
auto merge of #1643 : saneyuki/servo/1641, r=SimonSapin

This will fix #1641
r?
Fix #1612 Rename .rc to .rs, and relevant changes in Makefile.in
Implement Node.contains

Spec:
http://dom.spec.whatwg.org/#dom-node-contains

Closes #1647.
auto merge of #1648 : brunoabinader/servo/node-contains, r=Ms2ger

Spec:
http://dom.spec.whatwg.org/#dom-node-contains

Closes #1647.
Updated link to Code of Conduct in CONTRIBUTING.md

It seems that the correct link is https://github.com/mozilla/rust/wiki/Note-development-policy#wiki-conduct now whereas it was https://github.com/mozilla/rust/wiki/Note-development-policy#conduct before.