ndb/tools/ndb_size.pl:
  disable 5.1-dd reporting as it's not ready yet.
  
  support BLOB tables with mostly accurate space estimate (our estimates
  will be slightly higher due to the fact we also calculate an ORDERED index
  on the BLOB table, something that NDB doesn't have).
  
  now have subroutine do_table that does the calculations for a table. We
  call this with a "fake" blob table to get estimates for blob usage.
ndb/tools/ndb_size.tmpl:
  Add column in columns table for if column is VARSIZED