sqlite: upgrade to SQLite 3.8.6.1 - DO NOT MERGE

Downloaded from https://www.sqlite.org/2015/sqlite3-3.8.6-patched-20150522.tar.gz

  $ sha256sum sqlite3-3.8.6-patched-20150522.tar.gz
  0a47b495190a4def20a8f5f1b09f746f48f002d4d60bd6d0437b33a90faf8f70  sqlite3-3.8.6-patched-20150522.tar.gz

dist/orig contains the stock sqlite3 code, as packaged in the ZIP file above.

dist contains a copy of dist/orig, but with the Android.patch file applied.
Please see Android.patch for a list of differences between stock and
Android.

This distribution contains 3.8.6 plus several security fixes:

https://www.sqlite.org/src/info/eddc05e7bb31fae7
https://www.sqlite.org/src/info/02e3c88fbf6abdcf
https://www.sqlite.org/src/info/c494171f77dc2e5e
https://www.sqlite.org/src/info/95625ef3adc3c408
https://www.sqlite.org/src/info/0cdf502885ea7e58
https://www.sqlite.org/src/info/586a94e85bc13700

Change-Id: I92ffb14b52186aa31167da21791ea8aa69b0b498