Rename all Makefiles used by ct-ng into (something).mk, to avoid confusion.

Makefile.in

@@ -80,7 +80,7 @@ install-lib-main: $(LIBDIR)
 	     tar cf - --exclude=.svn $${src_dir} |(cd $(LIBDIR); tar xf -); \
 	 done
 	@rm -f $(LIBDIR)/tools/addToolVersion.sh
-	@for src_file in Makefile.steps version; do                 \
+	@for src_file in steps.mk version; do                 \
 	     echo "  INST   $${src_file}";                          \
 	     install -m 644 $${src_file} $(LIBDIR)/$${src_file};    \
 	 done

ct-ng.in

@@ -70,10 +70,10 @@ help-clean::
 	@echo  '  clean          - Remove generated files'
 	@echo  '  distclean      - Remove generated files, configuration and build directories'
 
-include $(CT_LIB_DIR)/kconfig/Makefile
-include $(CT_LIB_DIR)/samples/Makefile
-include $(CT_LIB_DIR)/tools/Makefile
-include $(CT_LIB_DIR)/Makefile.steps
+include $(CT_LIB_DIR)/kconfig/kconfig.mk
+include $(CT_LIB_DIR)/samples/samples.mk
+include $(CT_LIB_DIR)/tools/tools.mk
+include $(CT_LIB_DIR)/steps.mk
 
 help-distrib::
 	@echo  '  tarball        - Build a tarball of the configured toolchain'