[MEDIUM] added the new 'stats' keyword with user authentication subsystem.

Right now it only validates the user/passwd according to a specified list,
and lets the user pass through the proxy if the authentication is OK, and
it refuses any invalid access with a 401 Unauthorized response.
diff --git a/Makefile b/Makefile
index 63e2316..6607ce0 100644
--- a/Makefile
+++ b/Makefile
@@ -109,7 +109,7 @@
 
 all: haproxy
 
-haproxy: src/list.o src/chtbl.o src/hashpjw.o haproxy.o
+haproxy: src/list.o src/chtbl.o src/hashpjw.o haproxy.o src/base64.o src/uri_auth.o
 	$(LD) $(LDFLAGS) -o $@ $^ $(LIBS)
 
 %.o:	%.c