Import py-mssql2 2.1.0.

Microsoft SQL Server driver for Python.
Remove libassa.
Update to 0.6.
 - Added startup scripts for Debian, Red Hat (RHEL/Fedora/Scientific
   Linux/CentOS/etc.), Arch Linux and OpenIndiana/OpenSolaris.
 - Implemented -f command line option for downtimes(1) and downtimed(8).
   It can be used to specify the desired time and date format for
   reporting. The default remains "%F %T".
 - Implemented -u command line option for downtimes(1) for reporting
   times in UTC. Analogous to "date -u".
 - GNU/Hurd compatibility fixes contributed by Mats Erik Andersson.
 - FreeBSD 9 compatibility fix by Douglas Thrift.