Remove invalid test case

This test case relied upon producing a value beyond the bounds of a 32
bit integer in CPU registers. As Batbridge is a strictly 32 bit
architecture, this is invalid and the test fails. The test has now been
removed.
Rework to use standard field naming

Rework the bytecode word decoder to use the spec specified standard
field namings for the common fields. Note that this decoding still
leaves corner cases where fields will be misnamed, but them's the
breaks.
Patch double encoding bug

Fix a bug where the deftest macro would result in the double encoding of
a word sequence into rather than {Int -> (U Int IVec)}, {Int -> [Int (U
Int IVec)]}. This breaks test cases and is a problem.
Test the single cycle over the standard tests

Add deftests to run the single cycle processor against the standard test
suite.
Add the standard tests over the pipeline

Subject the pipelined processor simulator to the standard test suite
same as the single cycle processor.