ENH: add -suffix option for makeParaView and makeVTK

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

makeVTK

@@ -88,6 +88,7 @@ options:
   -verbose          verbose output in Makefiles
   -version VER      specify an alternative version (current value: $VTK_VERSION)
   -buildType NAME   specify the build type (default: Release)
+  -suffix NAME      specify a suffix to distinguish the build
   -help
 
 The -no-FEATURE option can be disable these features (if not already disabled):
@@ -107,7 +108,7 @@ For finer control, the build stages can be selected or deselected individually:
 
 * Make and install VTK-$VTK_VERSION located under
       \$WM_THIRD_PARTY_DIR/VTK-$VTK_VERSION
-  ->  \$WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER/VTK-$VTK_VERSION
+  ->  \$WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER/VTK-$VTK_VERSION$BUILD_SUFFIX
 
 USAGE
     exit 1
@@ -238,6 +239,11 @@ do
         BUILD_TYPE="$2"
         shift
         ;;
+    -suffix)
+        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
+        setBuildSuffix "$2"
+        shift
+        ;;
     *)
         die "unknown option/argument: '$1'"
         ;;