Fix GDB unwinding through JIT-compiled frames.
Fix GDB unwinding through JIT-compiled frames.

tempbottle/upb,tbetbetbe/upb,tempbottle/upb,bsn069/upb,tbetbetbe/upb,tbetbetbe/upb,bsn069/upb,tempbottle/upb,tempbottle/upb,bsn069/upb,bsn069/upb,bsn069/upb,tbetbetbe/upb,tbetbetbe/upb,tempbottle/upb