8157957: ClassNotFoundException: jdk.test.lib.JDKToolFinder
Reviewed-by: coleenp, gtriantafill, mseledtsov, iignatyev, dholmes, dsamersoff

8145148: InterfaceMethod CP entry pointing to a class should cause ICCE
Summary: pass tag in LinkInfo and check that resolved method type matches tag, fix tests.
Reviewed-by: sspitsyn, minqi