Revert "download_prerequisites: update MPFR version to recommended"

This reverts commit fe108dad32f521c4f924a397f11c63f86519e183.

diff --git a/contrib/download_prerequisites b/contrib/download_prerequisites
index 5184fae..7d0c4b5 100755 (executable)
--- a/contrib/download_prerequisites
+++ b/contrib/download_prerequisites
@@ -28,7 +28,7 @@ version='(unversioned)'
 # `contrib/prerequisites.md5` with the new checksums.
 
 gmp='gmp-6.1.0.tar.bz2'
-mpfr='mpfr-4.1.0.tar.bz2'
+mpfr='mpfr-3.1.4.tar.bz2'
 mpc='mpc-1.0.3.tar.gz'
 isl='isl-0.18.tar.bz2'