By SUSANNE CRAIG
Goldman Sachs is a master at making money. Lately it has become a master at giving it away. Goldman — for many a symbol of Wall Street greed and excess — wants the world to know it has a charitable side. With the same calculation that earned it a reputation as the savviest trading house on Wall Street, it has staked out a position as one of the nation’s leading corporate philanthropists, giving away more than $1.6 billion since 2008.