Remove extra .pc file that is not used.

Signed-off-by: Marko Saukko <marko.saukko@jollamobile.com>
Require android-headers in libhardware pc file.

Signed-off-by: Marko Saukko <marko.saukko@jollamobile.com>
Use @VERSION@ instead of hardcoded version numbers.

Signed-off-by: Marko Saukko <marko.saukko@jollamobile.com>
Merge pull request #129 from saukko/master

Minor fixes for pkg-config usage