benchmark-unify: add some mappings
to make it work with older versions at least as well as
unstable does...
benchmark-unify: add/change mappings for changes in core 1.8.0 --test output

(no new mappings for jumbo format renames, just core formats)
benchmark-unify: adjust logic for dynamic_n and old md5_gen(n)

so that relbench can compare test results of dynamic formats
in older john versions with latest bleeding output
Merge pull request #502 from frank-dittrich/bleeding-jumbo

benchmark-unify: add some mappings