Minor typo

frameworks/C++/cpoll_cppsp/Makefile

@@ -1,11 +1,11 @@
-all: cppsp_0.2
+all: cppsp_0.2.3
 
 clean:
-	rm -rf $IROOT/cppsp_0.2
 	rm -f www/*.so www/*.txt
 	rm -f www/forcedynamic.cppsm.*
+	cd $(IROOT)/cppsp_0.2.3 all && $(MAKE) clean
 
-cppsp_0.2:
-	$(MAKE) CXX=g++-4.8 -C $(IROOT)/cppsp_0.2 all
+cppsp_0.2.3:
+	$(MAKE) CXX=g++-4.8 -C $(IROOT)/cppsp_0.2.3 all