GIR XML for some FreeDesktop components

 GObject Introspection is a project for providing machine readable
 introspection data of the API of C libraries. This introspection
 data can be used in several different use cases, for example
 automatic code generation for bindings, API verification and documentation
 generation.
 .
 This package contains small pieces of introspection data for the Cairo,
 FontConfig, FreeType, GL, and some XOrg libraries, in the GIR XML format
 used to generate bindings for static languages like C++, D and Haskell.
 They are far from complete and only include what is necessary for other
 introspection packages to work properly.