Changes in the package
* ability to pass flags to the open() calls
* multithreading helpers

Full log at http://lua.sqlite.org/index.cgi/artifact/cc0df52dfc332ae0

Changes in packaging
* actually use PKG_BUILD_DIR
* Work with current upstream sources.  (current release only builds
because it's archived on openwrt servers)
* don't link against liblua, this is an anti-pattern
* properly specify the LSQLITE version instead of overriding the SQLITE
version.

Signed-off-by: Karl Palsson <karlp@etactica.com>