Merge in SQLite 3.7.16.0

[tesneddon]

Merge in the release of the official SQLite mainline, 3.7.16.0. The pre-processed source archive can be found here:

http://sqlite.org/2013/sqlite-preprocessed-3071600.zip

Look to the wiki entry Merging a New Release for details of how to perform the merge.

[tesneddon]

This release has been merged into master branch.