vtk: Add patch for finding Fujitsu-MPI wrapper commands. (#17069)

var/spack/repos/builtin/packages/vtk/find_fujitsu_mpi.patch

+--- VTK-8.2.0/CMake/FindMPI.cmake.org	2020-06-11 14:50:51.000000000 +0900
++++ VTK-8.2.0/CMake/FindMPI.cmake	2020-06-11 14:51:21.000000000 +0900
+@@ -99,12 +99,12 @@
+ #
+ 
+ # Start out with the generic MPI compiler names, as these are most commonly used.
+-set(_MPI_C_COMPILER_NAMES                  mpicc    mpcc      mpicc_r mpcc_r)
++set(_MPI_C_COMPILER_NAMES                  mpicc    mpcc      mpicc_r mpcc_r, mpifcc)
+ set(_MPI_CXX_COMPILER_NAMES                mpicxx   mpiCC     mpcxx   mpCC    mpic++   mpc++
+-                                           mpicxx_r mpiCC_r   mpcxx_r mpCC_r  mpic++_r mpc++_r)
++                                           mpicxx_r mpiCC_r   mpcxx_r mpCC_r  mpic++_r mpc++_r, mpiFCC)
+ set(_MPI_Fortran_COMPILER_NAMES            mpif95   mpif95_r  mpf95   mpf95_r
+                                            mpif90   mpif90_r  mpf90   mpf90_r
+-                                           mpif77   mpif77_r  mpf77   mpf77_r)
++                                           mpif77   mpif77_r  mpf77   mpf77_r, mpifrt)
+ 
+ # GNU compiler names
+ set(_MPI_GNU_C_COMPILER_NAMES              mpigcc mpgcc mpigcc_r mpgcc_r)

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

@@ -103,6 +103,9 @@ class Vtk(CMakePackage):
     depends_on('double-conversion', when='@8.2.0:')
     depends_on('sqlite', when='@8.2.0:')
 
+    # For finding Fujitsu-MPI wrapper commands
+    patch('find_fujitsu_mpi.patch', when='%fj')
+
     def url_for_version(self, version):
         url = "http://www.vtk.org/files/release/{0}/VTK-{1}.tar.gz"
         return url.format(version.up_to(2), version)