Privilege check added to update function and message

Based on bug report, menuSales.cpp was reviewed and detected that menu privilege check is OR linked with CustomerMasterMaintain so CustomerMasterMaintain activates the menu option. The behavior requested by the bug will make the utility to work only having the update credit status privilege. As bug is confirmed I have programmed the privilege and a error message if the user don't have it.
Gil,

   I fully understand your comments, in fact incidents operates the same way, if you have maintain incidents you can close them. Even when a close incidents privilege is present it is override by maintain incidents. I also understand Steve position, I responded to the bug report that was confirmed. I can do anyone you like but the guideline of the application behavior is up to you guys. 

Let me know which way you want to go.