Improves the current drcachesim raw2trace post-processing branch delay of a single branch to instead delay all consecutive branches until the next non-cti is reached (or a transfer marker or thread exit is seen).
Adds a new test tool.drcacheoff.raw2trace_unit_tests which synthesizes an instruction stream and raw trace content and tests raw2trace on this double-branch sequence.
Fixes #5141 (closed)