Our vendored patches

@dougfales @zsombor @bjhess @prsimp 

Hey guys, our plugin version of seamless_database_pool is woefully out of date, and it's erroring every which way with our Rails 3.2 upgrade.

The up to date version of seamless_database_pool works locally and this is porting our patches from [vendor/plugins/seamless_database_pool](https://github.com/harvesthq/harvestapp/commits/master/vendor/plugins/seamless_database_pool)

Please look these commits over as well and a general code review of the gem code as well.