fixes #2531569. Slider thumb not focasable by click
Build Slider modules
resolve merge conflict
build files for #2528788. keyboard & aria for slider. added requires event-key and did ant all in yui3/src/yui
Remove "Y." from @param and @return for API docs
[fix #2530561] Slider updates. Skin assets now live in /build/slider-base, not /build/slider. Updates to Slider examples.
Complete build of every module with the new flattened directory structure