[PATCH] add wrapper for C.sqlite3_last_insert_rowid

[GoogleCodeExporter]

gosqlite is missing a function to retrieve the id of the last inserted row, as 
documented on <http://www.sqlite.org/c3ref/last_insert_rowid.html>. 
Fortunately, adding it is trivial:

func (c *Conn) LastInsertRowID() (int64) {
    return int64(C.sqlite3_last_insert_rowid(c.db))
}

Original issue reported on code.google.com by shellr...@gmail.com on 16 Jan 2011 at 3:35