FindMPI: MSMPI changed the subdirectories it uses

Modules/FindMPI.cmake

@@ -426,16 +426,18 @@ function (interrogate_mpi_compiler lang try_libs)
 
       # Decide between 32-bit and 64-bit libraries for Microsoft's MPI
       if("${CMAKE_SIZEOF_VOID_P}" EQUAL 8)
-        set(MS_MPI_ARCH_DIR amd64)
+        set(MS_MPI_ARCH_DIR x64)
+        set(MS_MPI_ARCH_DIR2 amd64)
       else()
-        set(MS_MPI_ARCH_DIR i386)
+        set(MS_MPI_ARCH_DIR x86)
+        set(MS_MPI_ARCH_DIR2 i386)
       endif()
 
       set(MPI_LIB "MPI_LIB-NOTFOUND" CACHE FILEPATH "Cleared" FORCE)
       find_library(MPI_LIB
         NAMES         mpi mpich mpich2 msmpi
         HINTS         ${_MPI_BASE_DIR} ${_MPI_PREFIX_PATH}
-        PATH_SUFFIXES lib lib/${MS_MPI_ARCH_DIR} Lib Lib/${MS_MPI_ARCH_DIR})
+        PATH_SUFFIXES lib lib/${MS_MPI_ARCH_DIR} Lib Lib/${MS_MPI_ARCH_DIR} Lib/${MS_MPI_ARCH_DIR2})
       set(MPI_LIBRARIES_WORK ${MPI_LIB})
 
       # Right now, we only know about the extra libs for C++.