orctest: Improve test debugging output
Hi!
This MR implements the following changes for the test suite:
- integer variables are now displayed as unsigned; currently, the variables are two-complement converted to signed upon output, which makes debugging of instructions such as
accsadubl
impossible - implemented printing of
const
andparam
variable types, up to and including 64-bit sized operands - implemented tests tallying for
exec_opcodes_sys
, allowing checking at a glance how many tests are broken
This was split off !111 (merged) for easier review.