Add Makefile.in to maintainer-clean

svn path=/trunk/; revision=16171

plugins/h223/Makefile.am

@@ -38,6 +38,7 @@ h223_la_SOURCES = \
 	plugin.c
 
 h223_la_LDFLAGS = -module -avoid-version
+h223_la_LIBADD = @PLUGIN_LIBS@
 
 # Libs must be cleared, or else libtool won't create a shared module.
 # If your module needs to be linked against any particular libraries,
@@ -48,5 +49,8 @@ CLEANFILES = \
 	h223 \
 	*~
 
+MAINTAINERCLEANFILES = \
+	Makefile.in
+
 EXTRA_DIST = \
 	Makefile.nmake