The test relies on the fact that any name can be imported from a "magic"
package like `objcnames.classes`.
This was the case for K1, but likely won't be for K2: the compiler
should allow importing only those names that are actually
forward-declared in a cinterop library.
This commit changes the test that way. In particular, moves it to a
different task that has a cinterop dependency.
Svyatoslav Scherbina