During initialization of the backend the caller may provide a new
configuration to define a target ETS table for storing errors which the
backend encountered at runtime. These errors are written during handling
of write errors.
- put(), write() and delete() wrapped, checking for non-ok returns
- Option {on_write_error, verbose | warning | error | fatal}
added to the rocksdb_opts user property. The corresponding function
mnesia_lib:Op(Fmt, Args) will be called if an error return is spotted.
first select clause in a multi-clause select pattern. This could give
erroneous results if the first pattern was more specific (on the key)
than following patterns. This change calculates a prefix for all clauses
and keeps the shortest common prefix.
