Fix clean files in docu build

Author: dl8dtl

doc/api/Makefile.am

@@ -33,8 +33,9 @@
 MAINTAINERCLEANFILES = Makefile.in stamp-vti
 
 CLEANFILES           = *.html *.pdf *.ma *.mas \
-                       *.png *.eps fix_png \
-                       doxygen.config doxygen-pdf.config
+                       malloc-std.png malloc-x1.png malloc-x2.png \
+                       *.eps fix_png \
+                       doxygen.config main_page.dox doxygen-pdf.config
 
 EXTRA_DIST           = dox.css dox_html_header dox_html_footer \
                        doxygen.config.in \