Additional analyses

[woodruffw]

The following analyses are needed:

• size-discrepancies: Find all cohorts where all decoders succeed, but one or more disagree on the decoded instruction's size
• destroy-xed: Try to find errors in XED by pressuring it against Zydis, bddisasm, and iced
• single-status-discrepancy: Exactly one decoder disagrees with all of the others on the instruction's validity (treating everything that isn't S_SUCCESS as a failure)

[woodruffw]

The individual size-discrepancies passes should probably look like this:

• filter-all-failure: remove all cohorts in which every decoder failed (already implemented)
• dedupe: remove any duplicate inputs (analysis: add a dedupe pass #797)
• filter-ndecoded-same: remove all cohorts in which every succeeding decoder consumed the same number of input bytes
  • This is currently implemented as filter-ndecoded, and should be renamed + tweaked
• minimize-input: reduce each cohort's input instruction to the smallest length accepted by all decoders (already implemented)
• normalize: perform some basic normalization of each decoder's output string (already implemented)