Merge branch 'y/go' into t

* y/go: (25 commits)
  go/zodb/zodbtools: TODO (cmp, analyze)
  go/zodb/zodbtools: Catobj
  go/zodb/zodbtools: Info
  go/zodb/zodbtools: Dump
  go/zodb: Start of zodbtools - tools for managing ZODB databases
  go/zodb/fs1tools: Notes about other possible useful commands currently being there on ZODB/py side
  go/zodb/fs1tools: Reindex, Verify-index
  go/zodb/fs1tools: Dump
  go/zodb/fs1: Start fs1tools - tools for managing and maintaining ZODB FileStorage v1 databases
  go/zodb/fs1: My notes on I/O
  go/zodb/fs1: Register FileStorage to zodb & wks
  go/zodb/fs1: Actual FileStorage ZODB driver
  go/zodb/fs1: Add routines to (re)build and verify index from/wrt original FileStorage data
  go/zodb/fs1: Index save/load
  go/zodb/fs1: BTree specialized with KEY=zodb.Oid, VALUE=int64
  go/zodb: Start of FileStorage support
  go/zodb: Way for storage-drivers to be registered and for clients to open them by URL
  zodb/go: In-RAM client cache
  go/zodb: Minimal serialization compatibility with ZODB/py
  go/zodb: Tid connection with time
  ...