add mpi to the list of optional 1st argumements

mpi is the default, but now we have mpif08 as an option I think
./quickbuild.sh mpi should be an allowable thing for a user to run

build_templates/buildfunctions.sh

@@ -52,10 +52,11 @@ function print_usage() {
   echo "  quickbuild.sh clean               : clean the build" 
   echo "  quickbuild.sh help                : print help message"
   echo "   " 
-  echo "  quickbuild.sh [nompi/mpif08] [program]   : optional arguments " 
-  echo "                                            [nompi] build without mpi"
-  echo "                                            [mpif08] build with mpi using mpif_f08"
-  echo "                                            [program] build a single program"
+  echo "  quickbuild.sh [nompi/nompi/mpif08] [program]   : optional arguments " 
+  echo "                                                   [mpi]     build with mpi (default)"
+  echo "                                                   [nompi]   build without mpi"
+  echo "                                                   [mpif08]  build with mpi using mpif_f08"
+  echo "                                                   [program] build a single program"
   echo "   " 
   echo "  Example 1. Build filter without mpi:"
   echo "           quickbuild.sh nompi filter"
@@ -105,7 +106,7 @@ mpisrc=mpi
 windowsrc=no_cray_win
 m="-w" # mkmf wrapper arg
 
-# if the first argument is help, nompi, mpif08, clean
+# if the first argument is help, nompi, mpi, mpif08, clean
 case $1 in
   help)
     print_usage
@@ -118,6 +119,12 @@ case $1 in
     shift 1
     ;;
 
+  mpi)
+    mpisrc="mpi"
+    windowsrc="no_cray_win"
+    shift 1
+    ;;  
+
   mpif08)
     mpisrc="mpif08"
     windowsrc="no_cray_winf08"