Development headers for developing software using libMirage.

The aim of libMirage is to provide uniform access to the data stored in
different image formats, by creating a representation of disc stored in image
file, which is based on GObjects. There are various objects that represent
different parts of the disc; disc, session, track, sector, etc. In addition to
providing access to data provided by the image file, libMirage is also capable
of generating some of the data that might not be present in image file. For
instance, ISO image provides only user data from sector, without sync pattern,
header, ECC/EDC codes or subchannel. When this missing data is requested,
libMirage will transparently generate it.