Makefile.base: fix AR keeping removed source files objects

AR incrementally adds file without removing files.
If a c file is deleted or disabled(submodule removal) it is not removed from
archive and still ends up in the final elf file.

This fix removes the need to do 'make clean' for this case.

However it will break cases where an APPLICATION and a MODULE or two modules
have the same name and only worked because source files names where different.

Makefile.base

@@ -68,7 +68,9 @@ $(BINDIR)/$(MODULE)/:
 $(BINDIR)/$(MODULE).a $(OBJ): | $(BINDIR)/$(MODULE)/
 
 $(BINDIR)/$(MODULE).a: $(OBJ) | ${DIRS:%=ALL--%}
-	$(Q)$(AR) $(ARFLAGS) $@ $?
+	@# Recreate archive to cleanup deleted/non selected source files objects
+	$(Q)$(RM) $@
+	$(Q)$(AR) $(ARFLAGS) $@ $^
 
 CXXFLAGS = $(filter-out $(CXXUWFLAGS), $(CFLAGS)) $(CXXEXFLAGS)
 CCASFLAGS = $(filter-out $(CCASUWFLAGS), $(CFLAGS)) $(CCASEXFLAGS)