Makefiles improvement.

Makefile

@@ -1,2 +1,15 @@
+all: pcre test
+
 pcre:
-	(cd src/_pcre;$(MAKE);cp _pcre.so ../pcre)
+	(cd src/_pcre;$(MAKE);cp _pcre.so ../pcre)
+
+test: empty
+	test/run_tests.sh
+
+clean:
+	-(cd src/pcre;$(RM) -f *.pyc *.pyo *.so)
+	-(cd src/_pcre;$(MAKE) clean)
+
+empty:
+
+.SILENT:

src/_pcre/Makefile

@@ -17,4 +17,4 @@ pcre: pcre_module.o pcre_regex.o pcre_match.o
 	$(CC) $(CFLAGS) -shared -L/usr/local/lib -lpcre pcre_module.o pcre_regex.o pcre_match.o -o _pcre.so
 
 clean:
-	-rm *.o *.so
+	-rm -f *.o *.so