Builders FirstSource Inc. says it has "received all third party and governmental consents" it needs to complete its $1.63 billion acquisition of Denver-based ProBuild Holdings Inc., one of the nation's largest suppliers of building materials. Dallas-based Builders FirstSource (Nasdaq: BLDR) says that, subject to "customary" closing conditions, it expects to complete the deal early next month. Builders FirstSource -- a smaller building-materials supplier in terms of sales -- announced in April that...