ENH: add -suffix option for makeParaView and makeVTK

- simple means of distinguishing between types of builds
  (mesa, mpi, python).

makeParaView

@@ -108,6 +108,7 @@ options:
   -version VER      specify an alternative version (current value: $ParaView_VERSION)
   -major   VER      specify an alternative major version for special builds
   -buildType NAME   specify the build type (default: Release)
+  -suffix NAME      specify a suffix to distinguish the build
   -help
 
 The -no-FEATURE option can be used to forcibly disable these features:
@@ -127,7 +128,7 @@ For finer control, the build stages can be selected or deselected individually:
 
 * Make and install paraview-$ParaView_VERSION located under
       \$WM_THIRD_PARTY_DIR/ParaView-$ParaView_VERSION
-  ->  \$WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER/paraview-$ParaView_VERSION
+  ->  \$WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER/paraview-$ParaView_VERSION$BUILD_SUFFIX
 
 To make a different paraview version, simply specify on the command-line.
 For example,
@@ -300,6 +301,11 @@ do
         BUILD_TYPE="$2"
         shift
         ;;
+    -suffix)
+        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
+        setBuildSuffix "$2"
+        shift
+        ;;
     *)
         die "unknown option/argument: '$1'"
         ;;