Add testcase for finalizer rescue on call unwind
Add testcase for finalizer rescue on call unwind

This is trying to reproduce an issue found in Frida but seems to have no
issues with valgrind.

harold-b/duktape,svaarala/duktape,markand/duktape,svaarala/duktape,harold-b/duktape,svaarala/duktape,svaarala/duktape,harold-b/duktape,svaarala/duktape,markand/duktape,jmptrader/duktape,jmptrader/duktape,markand/duktape,harold-b/duktape,svaarala/duktape,svaarala/duktape,harold-b/duktape,jmptrader/duktape,harold-b/duktape,markand/duktape,markand/duktape,harold-b/duktape,jmptrader/duktape,harold-b/duktape,jmptrader/duktape,jmptrader/duktape,jmptrader/duktape,jmptrader/duktape,markand/duktape,svaarala/duktape,harold-b/duktape,markand/duktape,svaarala/duktape,harold-b/duktape,jmptrader/duktape,markand/duktape,markand/duktape,markand/duktape,jmptrader/duktape