SQLite version upgrade to 3.8.4.3

All of previous patches are merged.
(Except some of patches that are not necessary for new SQLite)
Add unixLogError() call for SQLITE_IOERR_FSTAT.
Some of compile warning messages are removed.

Change-Id: I863c65e9c58bea99a36ad178bae62b700adceaec
upate to 3.8.4.3 from linaro

Change-Id: I8d01c9cdeb0f0c4fd7f47117116e75a250085cf7