ensure that mixins can still apply additional mixins

Enyo-DCO-1.1-Signed-Off-By: Cole Davis (cole.davis@lge.com)
ensure that the length property is updated when using empty

Enyo-DCO-1.1-Signed-Off-By: Cole Davis (cole.davis@lge.com)
initial testing
ENYO-42: [Garnet] drag event occurs when multi touch
Enyo-DCO-1.1-Signed-off-by: Krishna Rangarajan <krishna.rangarajan@lge.com>
Merge pull request #824 from enyojs/ENYO-42-krishnarangarajan

ENYO-42: [Garnet] drag event occurs when multi touch

Looks good!

Reviewed-by: Aaron Tam (aaron.tam@lge.com)
Edits for new kinds.
Enyo-DCO-1.1-Signed-Off-By: Jim Tang (jim.tang@lge.com)
Merge branch 'master' of https://github.com/enyojs/enyo
Additional edits for existing kinds.
Enyo-DCO-1.1-Signed-Off-By: Jim Tang (jim.tang@lge.com)
Additional edits for existing kinds.
Enyo-DCO-1.1-Signed-Off-By: Jim Tang (jim.tang@lge.com)
Additional edits for existing kinds.
Enyo-DCO-1.1-Signed-Off-By: Jim Tang (jim.tang@lge.com)
Merge pull request #822 from enyojs/ENYO-97-coledavis

Fix for: ENYO-97
Merge pull request #821 from enyojs/ENYO-96-coledavis

Fix for: ENYO-96