Return the module handle value in Fiddle::Handle#to_i and add Fiddle::Handle#to_ptr

[mrkn]

Fiddle::Handle#to_i currently returns the address of the value of the module handle, that is &fiddle_handle->ptr.
I guess it is more useful than now that it returns the value of the module handle directly.

[mrkn]

I get the another proposal from @unak to introduce the new method Fiddle::Handle#value for this purpose.

[mrkn]

Other approach: Introducing Fiddle::Handle#value or Fiddle::Handle#pointer and let them return a Fiddle::Pointer instead of an integer.

[kou]

This is a backward incompatible change but the current Handle#to_i is useless. So nobody will get a trouble.
I'm OK with this change.

I also like Fiddle::Handle#pointer approach but how about #to_pointer instead of #pointer?

[mrkn]

OK. I will add to_ptr instead of to_pointer because Fiddle::Pointer.[] examine to_ptr.

[kou]

Thanks!