Infrastructure

for example, gmn imposes a limit of 1000 records allowed to be returned, and throws an InvalidRequest if asked to return more.

We need to either standardize slice limits across implementations, or modify libclient methods to work-around the limitation by making multiple calls.

algorithm:
1. call listObjects without count parameter
2. if resulting count < total, make count the increment, and call back to server for the next set.
3. repeat until total is reached.