* features/code_check/W0642.feature : Add scenario to reproduce a known
  bug.

* lib/adlint/exam/c_builtin/cc1_check.rb : Fix W0642 code check in order
  to warn only when the original object of implicit conversion is an
  array.

* lib/adlint/cc1/mediator.rb : Add implicit conversion notification in
  object conversion methods to notify illegal conversions.
* lib/adlint/cc1/interp.rb : Ditto.
* lib/adlint/cc1/expr.rb : Ditto.
* lib/adlint/cc1/ctrlexpr.rb : Ditto.

* lib/adlint/cc1/object.rb : Fix argument to parameter assignment
  behavior in order to notify illegal conversions correctly.