Update MPICH 3.1.4 to MPICH 3.2

Author: zbeekman

INSTALL.md

@@ -199,7 +199,7 @@ acceptable prerequisite or reaching the end of a branch.
 ```text
 opencoarrays
 ├── cmake-3.4.0
-└── mpich-3.1.4
+└── mpich-3.2
     └── gcc-6.1.0
         ├── flex-2.6.0
         │   └── bison-3.0.4

doc/dependency_tree/opencoarrays-tree.txt

@@ -1,6 +1,6 @@
 opencoarrays
 ├── cmake-3.4.0
-└── mpich-3.1.4
+└── mpich-3.2
     └── gcc-6.1.0
         ├── flex-2.6.0
         │   └── bison-3.0.4

doc/dependency_tree/opencoarrays/mpich-3.1.4/gcc-6.1.0/flex-2.6.0/bison-3.0.4/m4-1.4.17/.gitkeep renamed to doc/dependency_tree/opencoarrays/mpich-3.2/gcc-6.1.0/flex-2.6.0/bison-3.0.4/m4-1.4.17/.gitkeep

@@ -28,7 +28,7 @@ set_or_print_default_version()
   package_version=(
     "cmake:3.4.0"
     "gcc:6.1.0"
-    "mpich:3.1.4"
+    "mpich:3.2"
     "wget:1.16.3"
     "flex:2.6.0"
     "bison:3.0.4"

doc/dependency_tree/opencoarrays/mpich-3.1.4/gcc-6.1.0/gmp/.gitkeep renamed to doc/dependency_tree/opencoarrays/mpich-3.2/gcc-6.1.0/gmp/.gitkeep

@@ -4,7 +4,7 @@ print_header()
   clear
   echo ""
   echo "*** By default, building OpenCoarrays requires CMake 3.4.0 or later,      ***"
-  echo "*** MPICH 3.1.4, and GCC Fortran (gfortran) 6.1.0 or later.  To see       ***"
+  echo "*** MPICH 3.2, and GCC Fortran (gfortran) 6.1.0 or later.  To see         ***"
   echo "*** options for forcing the use of older or alternative packages, execute ***"
   echo "*** this script with the -h flag.  This script will recursively traverse  ***"
   echo "*** the following dependency tree, asking permission to download, build,  ***"