Use module_load_include on libraries module when installing geoip.

When installing a group of modules, like in an install profile for example, the geoip module errors out with an undefined function error, claiming that 'libraries_detect' does not exist.

It seems to be a common pattern pattern in install hooks to use module_load_include even on module files. I can't find specific documentation which says you must load the module files of dependencies, but it's mentioned briefly here:

> When you are installing a module that is dependent on another module, the other module might not be 100% functional.

There are lots of other examples of this in contrib and one in core with openid doing a module_load_include on itself.