Get and bget now have verify returned value option.
Get and bget now have verify returned value option.

Get and Bget have an optional last parameter of a value to which is
used to check if we are getting the expected value back from the DB.
Error messages consistency and being written out to stderr.

mdhim/mdhim-tng,mdhim/mdhim-tng,mdhim/mdhim-tng,mdhim/mdhim-tng