Fix for interpreter crash on new instance of class

Rationale:
Fuzz testing found divergences between the compiler and interpreter
which turned out to be caused by calling instance on java.lang.Class
(this worked for compiler but crashed interpeter). Since RI does not
allow this construct, solution is to force interpreter in this
unlikely case and throw run time exception like RI. This fixes
two cases found with fuzz testing. CL also includes
fail-before/pass-after test.

Test: 600-verifier-fails

BUG=29758098

Change-Id: Ie80f7758def44e6655d28fec4c10c34ffa0fd60b