Timob 13561: Android: Move Ti.Android.Calendar to Ti.Calendar and deprecate Ti.Android.Calendar

https://jira.appcelerator.org/browse/TIMOB-13561
For FR, please run scons and docgen. Then run all the test cases in apidoc/Titanium/Android/Calendar/Calendar.yml and the first three test cases apidoc/Titanium/Calendar/Calendar.yml .