refactoring 'enum' to 'enum class'

This week I've gone through some old C/C++ code. The code has used some old enums together with int-typed variables. To improve the stuff I've changed the enums to 'enum class' and inserted the enum type before each usage of one of the enum literals.

I.e.

enum Foo {
  Val1, Val2, Val3 
};

together with e.g.

int bar = Val1;

got changed to

enum class Foo {
  Val1, Val2, Val3
};

and

int bar = Foo::Val1;

Since I talk about quite a lot of enum literals it would have been helpful if QtC is able to do the refactoring by itself.