compiler-families/gnu-compilers: revert mpfr revision bump
%global gmp_version 6.1.2
%global mpc_version 1.0.3
-%global mpfr_version 4.0.0
+%global mpfr_version 3.1.6
Summary: The GNU C Compiler and Support Files
Name: %{pname}%{PROJ_DELIM}
