maidsafe/MaidSafe-Common — pull request #36 by maqi (2014-09-15 13:59:20+00:00)
Title: Maid 144 enable disabled tests

https://maidsafe.atlassian.net/browse/MAID-144

1, create a new error db_not_presented
so the situation that bootstrap file not prensented can be detected quicker.
i.e. not hindered by the SQLite error handling -- re-attempt

2, tune SQLite configuration
Use WAL, turn off synchronous, use IMMEDIATE