Added timeout option to SQLite3 configurations to deal more gracefully with SQLite3::BusyException, now the connection can instead retry for x seconds to see if the db clears up before throwing that exception (closes #6126) [wreese@gmail.com] Added default timeout setting of 5 seconds to SQLite3 database.yml configurations [DHH]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5258 5ecf4fe2-1ee6-0310-87b1-e25e094e27de