[issue20465] Upgrade SQLite to 3.8.3 with 3.4.0 Windows and OS X installers

[Ned Deily]

Ned Deily added the comment:

"Fix a bug (ticket 4c86b126f2) that causes rows to go missing on some queries with OR clauses and IS NOT NULL operators in the WHERE clause, when the SQLITE_ENABLE_STAT3 or SQLITE_ENABLE_STAT4 compile-time options are used."

http://www.sqlite.org/releaselog/3_8_3_1.html

We don't use those compile-time options for the OS X build, so, if this is the only meaningful bug, it may be a no-op.  The tests pass before and after.  Still, it's probably better to update now.  I've opened Issue20818 as a cherry pick request for 3.4.0.

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<http://bugs.python.org/issue20465>
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