[MERGE] (robertc) Reduce object creation volume during commit by reusing the repository graph object. (Robert Collins)

[Aaron Bentley]

Aaron Bentley has voted approve.
Status is now: Approved


For details, see: 
http://bundlebuggy.aaronbentley.com/request/%3C1191536914.8781.0.camel%40lifeless-64%3E