WIP on module instantiation.

Rather than the skeleton dir shipping with a couple of ready-made
modules, one for each type of project, it would make much more sense and
be much more flexible to instead provide a script to instantiate modules
as needed.

skel/scripts/build.doxygen.docs/build.install-docs

@@ -0,0 +1,19 @@
+build_target docs
+
+# create documentation directories
+echo "Installing documentation into ${DOCSDIR}"
+build_dir_tree "${DOCSDIR}/html" || return 1
+
+# copy across the Doxygen-generated documentation
+for file in html/*
+do
+    install_file ${file} ${DOCSDIR}/html 0644 || return 1
+done
+
+# copy across the generic files
+for file in COPYING README
+do
+    install_file ${file} ${DOCSDIR} 0644 || return 1
+done
+
+print_success "Documentation installed"