This script is used by mate-autogen to include the standard user documentation build files in a MATE
package.
To automatically include the standard user documentation build files (omf.make and xmldocs.make) in you
package, set USE_COMMON_DOC_BUILD=yes in autogen.sh before calling the macros/autogen.sh script.
When porting applications across to use this feature, ensure that all of the references to xmldocs.make
are to $(top_srcdir)/xmldocs.make in the appropriate Makefile.am files. Some modules assume that
xmldocs.make is in another directory (like docs/ or something).