fix mpfr download url

SVN-Revision: 14213

tools/mpfr/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 PKG_NAME:=mpfr
 PKG_VERSION:=2.3.2
 
-PKG_SOURCE_URL:=http://www.mpfr.org/mpfr-current/
+PKG_SOURCE_URL:=http://www.mpfr.org/mpfr-2.3.2
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_MD5SUM:=527147c097874340cb9cee0579dacf3b