* The skeleton Doxygen configuration file has been updated to
further improve the generated reference documentation.
* The dash separator before the API version suffix of a module
name is now optional.
* The installed skeletonmm source tree is now bundled in a tar
archive.
* When installing from source into a different prefix than the
system aclocal, an informational notice will now be shown to
inform about the need to set ACLOCAL_FLAGS.
