Build against bundled sqlite if version is bad

Summary: Running hhvm against sqlite 3.8.2 fails with:
'COMMIT;' --> (5) cannot commit transaction - SQL statements in progress

Without this patch the cmake scripts will use the bundled copy of sqlite
if 3.8.4 <= version < 3.8.6.  With this patch the range is now
3.8.2 <= version < 3.8.6 so hhvm will not try to run against sqlite 3.8.2.

Closes #3994
Closes https://github.com/facebook/hhvm/pull/3995

Reviewed By: @paulbiss

Differential Revision: D1621175