Bugs in oracle db upgrade for enterprise plugin

Bug number 1.

There is a bug in the upgrade for the enterprise plugin for oracle.

The sql for upgrade/8/oracle_enterprise.sql has invalid alter statements

ALTER TABLE entSipUser ADD COLUMN outboundproxy VARCHAR(255) NULL;

ALTER TABLE entSipUser ADD COLUMN promptCredentials INT NULL;

The COLUMN keyword is invalid here and should be removed.

I had to apply the sql updates manually for 8, 9 and 10.