YUI and Loader build for latest Gallery build
Merge branch 'dev-master' into dev-3.x

Conflicts:
	build/yui-nodejs/yui-nodejs-min.js
	build/yui/yui-min.js

Merge gallery tag changes into dev-3.x.
Move Widget's `_preAddAttrs` method override into `widget-htmlparser`.

Because `widget-base` no longer includes the ATTRS definition for `srcNode`,
any attempt to instantiate `Y.Widget` when only requiring `widget-base` will
fail spectacularly. Anyone using the `widget` rollup won't notice a difference.
Build widget-base and widget-htmlparser.
Fixed API doc for EventTarget fire method

As per http://yuilibrary.com/projects/yui3/ticket/2532950 the return
value of the fire event was corrected.
Build event-custom-base. Doc changes only.
Merge branch 'live-docs' into dev-master
Merge branch 'dev-master' into dev-3.x

Conflicts:
	build/event-custom-base/event-custom-base-coverage.js