apply couple of bug fixes from sqlite

applying the following bug fixes
http://www.sqlite.org/src/info/82dd61fccf
   Sync the database file after a rollback
http://www.sqlite.org/src/info/6f368b5448
  Modify the sqlite3_log() interface and implementation so that it never
  uses dynamic memory allocation - to avoid deadlocking when called
  while holding the memory allocator mutex.

Change-Id: I93929d2dacd399ae9bd291404bcdf2c512691254