bundle2: add an 'idx' argument to the 'getbundle2partsgenerator'
This argument let extensions control in what order bundle2 part are generated
server side during a pull. This is useful to ensure the transaction is in a
proper state before some actions or hooks happens.
bundle2: add an 'idx' argument to the 'b2partsgenerator'
This argument let extensions control in what order bundle2 part are generated
client side during a push. This is useful to ensure the transaction is in a
proper state before some actions or hooks happens.