Bs 11

This pull request adds --inspect-storage <number_of_buckets> to bsmgr.

http://jira.incubaid.com/browse/BS-11 talks about documenting that this change is quite IO heavy. I'm currently looking through the documentation but so far haven't found the appropriate spot. Or is putting it in the commandline message enough?

A not so unimportant detail of this commit is that I read in every value to determine it's size.
I wonder if the on disk format allows determining the size without reading the entire string (have not yet looked this up)... As far as I can tell there is no operation on the Log module to support this. Having this available would really reduce the IO intensity of this operation.