buildsys: fix realclean

For anything but (toplevel) clean, CLEAN_%, we need .config
Otherwise realclean would leave stuff behind that was not intended to
survive.

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

Makefile.in

@@ -498,7 +498,7 @@ clean: include_clean
 	$(Q)$(RM) $(top_builddir)extra/scripts/unifdef
 	$(Q)$(RM) -r $(LOCAL_INSTALL_PATH)
 
-distclean: clean
+distclean: realclean
 	-find . \( -name core -o -name \*.orig -o -name \*~ -o -name .\*.dep \) -exec $(RM) {} \;
 	$(RM) $(top_builddir).config $(top_builddir).config.old $(top_builddir).config.cmd
 	$(Q)$(RM) $(top_builddir)extra/locale/*.tgz

Rules.mak

@@ -84,7 +84,7 @@ qstrip = $(strip $(subst ",,$(1)))
 KCONFIG_CONFIG ?= $(top_builddir).config
 
 # Pull in the user's uClibc configuration
-ifeq ($(filter $(noconfig_targets) $(clean_targets) CLEAN_%,$(MAKECMDGOALS)),)
+ifeq ($(filter $(noconfig_targets) clean CLEAN_%,$(MAKECMDGOALS)),)
 # Prevent make from searching
 __ABS_KCONFIG_CONFIG ?= $(abspath $(KCONFIG_CONFIG))
 -include $(__ABS_KCONFIG_CONFIG)