copy README.txt to etc/python

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@32302 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/python/Makefile

@@ -6,8 +6,10 @@ include $(MODULE_TOPDIR)/include/Make/Rules.make
 
 default: $(ETC)/python
 
-$(ETC)/python: *.py
+$(ETC)/python: grass.py README.txt
 	if [ ! -d $@ ]; then $(MKDIR) $@; fi
 	for file in $^ ; do $(INSTALL_DATA) $$file $@ ; done
 
+.PHONY: $(ETC)/python
+
 clean: