compilation flag SQLITE_ENABLE_FTS4_UNICODE61 no longer needed with v3.8.6

(see Message-ID: <53BCFA91.1080703@gmail.com> From: Dan Kennedy <danielk1977@gmail.com> :
"FTS4 has been updated to match the documentation. So that "unicode61" is
now enabled by default or disabled by SQLITE_DISABLE_FTS3_UNICODE. As of
3.8.6, SQLITE_ENABLE_FTS4_UNICODE61 will no longer exist."

 http://www.sqlite.org/src/info/0cc0230ae9cf)