Merge pull request #284 Add SQLITE_OPEN_FULLMUTEX flag from rwrx/full…

…mutex-flag

src/Database.cpp

@@ -31,6 +31,7 @@ const int   OPEN_READONLY   = SQLITE_OPEN_READONLY;
 const int   OPEN_READWRITE  = SQLITE_OPEN_READWRITE;
 const int   OPEN_CREATE     = SQLITE_OPEN_CREATE;
 const int   OPEN_URI        = SQLITE_OPEN_URI;
+const int   OPEN_FULLMUTEX  = SQLITE_OPEN_FULLMUTEX;
 
 const int   OK              = SQLITE_OK;