Update docs about custom builds, including unSizzled version.
Old acceptData tests refactored and adapted to support new data system
 Fixes #11151, #13388. Minor refactor of response conversion and when/where
 responseXXX fields are set on the jqXHR. Close gh-1164.

(Cherry-picked from 69b3d5ce0f081d3f113b2917495f35df160f8522)
Fix typos. Close gh-1186.
Squeeze support module. Close gh-1165.
Ref #13353, gh-1183: Capture onlyHandlers in jQuery.Event.isTrigger.
Remove the define.amd.jQuery check, ref gh-1150.