Fixes https://github.com/ibm-dojo/deliteful/issues/5.  Change dojo/touch to dpointer within Slider.  Added feature test to see if zoom affects position() return values or not (used to be: if has(ie) but IE11 works the same as all IE versions).
Fixes https://github.com/ibm-dojo/deliteful/issues/5.  Change dojo/touch to dpointer within Slider.  Added feature test to see if zoom affects position() return values or not (used to be: if has(ie) but IE11 works the same as all IE versions).

tkrugg/deliteful,harbalk/deliteful,cjolif/deliteful,kitsonk/deliteful,brunano21/deliteful,cjolif/deliteful,tkrugg/deliteful,EAlexRojas/deliteful,EAlexRojas/deliteful,harbalk/deliteful,kitsonk/deliteful,brunano21/deliteful