Fix openblas build with intel compiler (#34432)

This PR patches the f_check script to detect the ifort compiler and
ensure that F_COMPILER is iset to INTEL. This problem was introduced with
openblas-0.3.21. Without this patch, the value of F_COMPILER falls back
to G77 and icc rather than ifort is used for the linking stage. That
results in the openblas library missing libifcore, which in turn means
many Fotran programs can not be compiled with ifort.

var/spack/repos/builtin/packages/openblas/f_check-intel.patch

@@ -0,0 +1,24 @@
+diff -ur a/f_check b/f_check
+--- a/f_check	2022-08-07 15:36:26.000000000 -0500
++++ b/f_check	2022-12-09 16:17:43.475278869 -0600
+@@ -102,7 +102,7 @@
+                             vendor=FLANG
+                             openmp='-fopenmp'
+                             ;;
+-                        *ifx*)
++                        *ifort*|*ifx*)
+                             vendor=INTEL
+                             openmp='-fopenmp'
+                             ;;
+diff -ur a/f_check.pl b/f_check.pl
+--- a/f_check.pl	2022-08-07 15:36:26.000000000 -0500
++++ b/f_check.pl	2022-12-09 16:18:59.982923288 -0600
+@@ -95,7 +95,7 @@
+ 		if ($compiler =~ /flang/) {
+ 		    $vendor = FLANG;
+ 		    $openmp = "-fopenmp";
+-	    } elsif ($compiler =~ /ifx/) {
++	    } elsif ($compiler =~ /ifort/ || $compiler =~ /ifx/) {
+ 		    $vendor = INTEL;
+ 		    $openmp = "-fopenmp";
+ 	    } elsif ($compiler =~ /pgf/ || $compiler =~ /nvf/) {

var/spack/repos/builtin/packages/openblas/package.py

@@ -94,6 +94,7 @@ class Openblas(MakefilePackage):
 
     # https://github.com/spack/spack/issues/31732
     patch("f_check-oneapi.patch", when="@0.3.20 %oneapi")
+    patch("f_check-intel.patch", when="@0.3.21 %intel")
 
     # OpenBLAS >=3.0 has an official way to disable internal parallel builds
     patch("make.patch", when="@0.2.16:0.2.20")