Qscript to Globally set application usernames/password for MS SQL iDA's.

Either a specific client or all clients must be specified.  
The username option is not required. If specified, the username in addition to the password is modified.  If it is omitted, only the password is modified.

Usage:
qoperation execscript -sn SetMSSQLCredentials.sql -si c=clientName|allclients -p2 password [-si username ]