Issue #2349195: improved multichoice feedback
Use xautoload.module for PSR-4 autoload loading.
Fix PHP warning: Declaration of LongAnswerResponse::getReportFormValidate() should be compatible with QuizQuestionResponse::getReportFormValidate()
Issue #2351255 by thehong: Fixed Declaration of LongAnswerResponse::getReportFormValidate() should be compatible with QuizQuestionResponse::getReportFormValidate().
Merge branch 'pr/fix-method-incompatible' into pr/PSR-0--TestCases

* pr/fix-method-incompatible:
  Fix PHP warning: Declaration of LongAnswerResponse::getReportFormValidate() should be compatible with QuizQuestionResponse::getReportFormValidate()
Merge branch 'pr/use-xautoload-module' into pr/PSR-0--TestCases

* pr/use-xautoload-module:
  Use xautoload.module for PSR-4 autoload loading.
Merge branch '7.x-5.x' into pr/PSR-0--TestCases

* 7.x-5.x:
  Issue #2351255 by thehong: Fixed Declaration of LongAnswerResponse::getReportFormValidate() should be compatible with QuizQuestionResponse::getReportFormValidate().
  Issue #2349195: improved multichoice feedback