MPMLink - allow to add extra attributes/columns in the MAPSB Equivalent tab

[GaryWalling]

Adding custom attributes to tables on the Equivalent Parts tab in the Manufacturing Associative Part Structure Browser (MAPSB) in Windchill MPMLink.

Background - Our WT part number is a globally unique "engineering" part number.  We have multiple Mfg sites and many are using multiple format local Mfg part numbers.  These local Mfg number is not the WT part number and we must use a new attribute to hold the local Mfg part number.  We need the local Mfg part number to be displayed on the equivalent tab to help the team recognize and understand the parts that they are working with.