* Fixed warnings in cg_upnp_devicetype_geturn() using GCC 4.2.1.
* Fixed some warnings using GCC 4.2.1.
* Updated cg_action_get*() to use const parameters.
* Fixed to compile normally using expat on MacOSX 10.9.
* Fixed some warnings using GCC 4.2.1.
* Fixed include/Makefile.am.build to run normally on MacOSX 10.9.