AddFarVariationDependencies was broken, which allowed dependencies
on non-libraries to be added even though a link variation was
requested. When AddFarVariationDependencies is fixed, attempting
to add a non-library to jni_libs results in the usual missing
variant error.
Test: none
Change-Id: I6aa281491b8af5f141a2d132e248c75f95d68ab5