Require pari>=2.15, remove old bug test

Author: antonio-rojas

build/pkgs/pari/spkg-configure.m4

@@ -1,7 +1,7 @@
 SAGE_SPKG_CONFIGURE([pari], [
   dnl See gp_version below on how the version is computed from MAJV.MINV.PATCHV
-  m4_pushdef([SAGE_PARI_MINVER],["134401"])dnl this version and higher allowed
-  m4_pushdef([SAGE_PARI_MAXVER],["134912"])dnl this version and higher not allowed
+  m4_pushdef([SAGE_PARI_MINVER],["134913"])dnl this version and higher allowed
+  m4_pushdef([SAGE_PARI_MAXVER],["999999"])dnl this version and higher not allowed
   SAGE_SPKG_DEPCHECK([gmp readline], [
     AC_PATH_PROG([GP], [gp])
     if test x$GP = x; then dnl GP test
@@ -67,17 +67,6 @@ SAGE_SPKG_CONFIGURE([pari], [
             AC_MSG_NOTICE([Otherwise Sage will build its own pari/GP.])
             sage_spkg_install_pari=yes
         fi
-        AC_MSG_CHECKING([whether rnfdisc bug of pari 2.13.1 is fixed])
-        bug_check=`echo "K = nfinit(y^4-10*y^2+1); disc = rnfdisc(K,x^2-(y^3/2+y^2-5*y/2+1)); idealnorm(K,disc)" | $GP -qf 2>> config.log`
-        expected="2304"
-        if test x"$bug_check" = x"$expected"; then
-          AC_MSG_RESULT([yes])
-        else
-           AC_MSG_RESULT([no; cannot use system pari/GP with known bug])
-           AC_MSG_NOTICE([Upgrade your system package and reconfigure.])
-           AC_MSG_NOTICE([Otherwise Sage will build its own pari/GP.])
-           sage_spkg_install_pari=yes
-        fi
     fi dnl end GP test
 
       if test x$sage_spkg_install_pari = xno; then dnl main PARI test