Force the use of UTF-8 for SCM logs.
Force use of UTF-8 for message pack write buffer.

With Ruby 2.1.3 MessagePackPure seems to want to use ISO-8859-1 and then
complain about mis-matching encodings.
Change tddium to solano
Added tddium executable for running gem also with 'tddium' command.
fixed broken autocomplete, also added tedium autocomplete
Accept TDDIUM_* for backwards compatibility.