Fix custom port for MS SQL connection (sqlsrv.inc)

Problem

Migrate module (sqlsrv.inc) uses an incorrect way how to add a port to the server IP address or server hostname.
If someone specifies a custom port for connection to MS SQL server as the 'port' key in database config, the connection fails.

The Correct syntax for the $host parameter in sqlsrv_connect function is IP,port, not IP:port.

For more info, see

• https://www.php.net/manual/en/function.sqlsrv-connect.php,
• https://social.msdn.microsoft.com/Forums/sqlserver/en-US/f4d6d191-332b-4...

Correct example:

sqlsrv_connect('10.0.0.100,1434', $connectionInfo);

Solution:

Replace ':' with ',' where the $host is created.

A patch is attached.