fixing r.binary as a key
changing key ordering so that binary sorts as a pseudotype, and fixed pseudotype ordering in datum_t::cmp
fixing secondary key format for common prefixes - this breaks sindex compatibility with previous versions
adding test for index sorting
fixing test-runner for using a running server instance
Merge branch 'grey_binary_sindex' into sam_2789_keyfix
Made datum_t::cmp and print_secondary be properly reql-versioned, but passed in reql_version_t::RSI everywhere.