Teach debuggerd to pass the secondary ring buffer to __scudo_get_error_info().

With this change we can report memory errors involving secondary
allocations. Update the existing crasher tests to also test
UAF/overflow/underflow on allocations with sizes sufficient to trigger
the secondary allocator.

Bug: 135772972
Change-Id: Ic8925c1f18621a8f272e26d5630e5d11d6d34d38