fixed error reporting in dal

VERSION

@@ -1 +1 @@
-Version 2.2.1 (2012-11-29 23:53:48) stable
+Version 2.2.1 (2012-11-30 08:33:32) stable

gluon/dal.py

@@ -706,7 +706,7 @@ class BaseAdapter(ConnectionPool):
             self.driver_name = drivers_available[0]
             self.driver = globals().get(self.driver_name)
         else:
-            raise RuntimeError("no driver available %s" % self.drivers)
+            raise RuntimeError("no driver available %s" % str(self.drivers))
 
 
     def __init__(self, db,uri,pool_size=0, folder=None, db_codec='UTF-8',

scripts/setup-web2py-heroku.sh

@@ -1,6 +1,6 @@
 read -p "Choose your admin password?" passwd
 sudo pip install virtualenv
-sudo pip install postgresql2
+sudo pip install psycopg2
 virtualenv venv --distribute
 source venv/bin/activate
 pip freeze > requirements.txt