Added storage of bridge type objects; added a method to call methods on them; added a disposal of bridge objects.
Added storage of bridge type objects; added a method to call methods on them; added a disposal of bridge objects.

This is largely untested and unused at the moment. It requires some changes in native code to take advantage of it.

KirinJS/Kirin,futureplatforms/Kirin,futureplatforms/Kirin,KirinJS/Kirin,futureplatforms/Kirin,KirinJS/Kirin,futureplatforms/Kirin,futureplatforms/Kirin