[mysql] remove_index! to pass tests on AR-2.3 (does not quote table_name)
assert_queries should yield when SQLCounter disabled (avoids 2.3 failures)
move custom assert_s into helper + add assert_datetime, assert_date_type
no need to pass in (Java) adapter for DerbyModule
rename Sqlite3RubyJdbcConnection + SQLite3Module with quote(d) impls
separate type conversion tests + add a failing test for binary encoding (#51)
use Java quote(d) impls & minor cleanup + fix binary column handling (#51 )
AR-2.3 compatibility with :order in tests + do not fail if ruby-debug missing