Use master branch of epgsql/epgsql.
Merge branch 'master' of https://github.com/ChicagoBoss/boss_db
Initial version of find_by_sql.

This could probably be called something else, but the idea is that it
takes a "native" query of some kind, and returns activate_record'ized
results.
Forgot parameters - readded them.
Merge remote-tracking branch 'davidw/find_by_sql' into find_by_sql

Conflicts:
	rebar.config
Add find_by_sql to mysql. export find_by_sql/2.
Update mysql to get tests working.

Mysql has a number of issues with fulltext search in the middle of
transactions, so we have to eliminate the transactions portion of push
and pop.

Further, to ensure that the tests all draw from the same pool (since our
tests actually are supposed to happen in a transaction), we run them
through a mock transaction which ensures we're always drawing from the
same pool.

If mysql ever fixes fulltext search during a transaction after
inserting, then we can remove the test checking and use normal savepoint
and rollback pairs.

Also, there were issues loading the boss_test_app as an actual
application, so just removed that component altogether, reconfiguring
the configs to just specify boss_test as the application.

ALSO, mysql's "boolean" operator is just a shortcut for tinyint(1),
which ends up being handled by boss_db as an integer, so we had to
modify the test model to tell boss_db to treat the boolean field as a
boolean.

Finally, fulltext search doesn't work at all in Mysql without having a
fulltext index. So added fulltext indexing to the mysql.sql
initialization script.