cleanup docs when calling "make maintainer-clean"

[[Imported from SVN: r5793]]

am/doxygen

@@ -136,7 +136,8 @@ doxygen-dist-clean:
 
 doxygen-maintainer-clean:
 	rm -rf $(DOXYGENTAG) $(DOXYGEN_HTML) $(DOXYGENHEADER) $(DOXYGENFOOTER) *~
-	test -f Doxylocal &&  rm -f Doxygen.in
+	rm -f doxyerr.log doxygen.log
+	test -f Doxylocal && rm -f Doxygen.in
 
 # nice trick from the GNU make infopage to force a rule to run
 FORCE:

am/webstuff

@@ -39,4 +39,10 @@ else
 web-install-default:
 endif
 
+web-build: $(PAGES)
+web-clean:
+	rm -f $(PAGES)
+
+maintainer-clean-local: web-clean
 web-install-am: web-install-default
+doc-am: web-build