Fix build in a subdirectory after make clean

Makefile.am

@@ -32,13 +32,15 @@ EXTRA_DIST = \
 	src/misc/modules_builtin.h.in \
 	$(NULL)
 
-BUILT_SOURCES = \
-	vlc-config \
+DISTCLEAN_BUILT_SOURCES = vlc-config
+CLEAN_BUILT_SOURCES = \
 	stamp-api \
 	src/misc/modules_builtin.h \
 	src/misc/version.c \
 	$(NULL)
 
+BUILT_SOURCES = $(CLEAN_BUILT_SOURCES) $(DISTCLEAN_BUILT_SOURCES)
+
 SUFFIXES = 
 
 # Tell aclocal to use -I m4. Wonder if it really works.
@@ -286,8 +288,8 @@ vlc-config.in: vlc-config.in.in
 	./config.status --recheck
 
 MOSTLYCLEANFILES = $(DATA_noinst_libvlc)
-CLEANFILES = $(BUILT_SOURCES) stamp-builtin
-DISTCLEANFILES = vlc-config.in
+CLEANFILES = $(CLEAN_BUILT_SOURCES) stamp-builtin
+DISTCLEANFILES = $(DISTCLEAN_BUILT_SOURCES) vlc-config.in
 
 if HAVE_WIN32
 lib_LIBRARIES = lib/libvlc.a