Add six round-trip failures.

Add crash case crash-35-x64-this-is-not-an-immediate.c

Create arm_blx_rel_thumb2.py

 blx thumb bug #166

Merge branch 'improvement/generate-pkg-config' of https://github.com/adrianherrera/keystone into adrianherrera-improvement/generate-pkg-config

Add three crash cases

This is required for when I get around to writing some Haskell bindings :-)

Add two round-trip failures

Improve crash case readability.

Add new round-trip test cases.

Add round-trip test cases

do boundary check for MCContext::Instances[]. this fixes crash-01-x64-empty-tombstone-value-shouldnt-be-inserted-into-map.c

Clean up test cases

Add crash case crash-31-x64-layout-bookkeeping-error.c

Merge pull request #158 from practicalswift/crash-30-x64-attempt-to-compute-fragment-before-its-predecessor.c

Add crash case crash-30-x64-attempt-to-compute-fragment-before-its-predecessor.c

Add crash case triggering "Invalid scale!" assertion failure.

Clean up crash cases in order to improve readability