Add cluster as a resource library dependency.

(cherry picked from commit 76e523b4eaa1ef352a7d26dcc35014dbc068f82b)

Author: Pavel Marek

mx.fastr/suite.py

@@ -68,7 +68,7 @@
       "resource" : "true"
     },
 
-    # A recommended package with a fixed version rather than taken from GNU-R.
+    # A recommended package "rpart" with a fixed version rather than taken from GNU-R.
     "RPART" : {
       "path" : "libdownloads/rpart.tar.gz",
       "ext" : "tar.gz",
@@ -78,6 +78,16 @@
       "resource" : "true"
     },
 
+    # A recommended package "cluster" with a fixed version rather than taken from GNU-R.
+    "CLUSTER" : {
+      "path" : "libdownloads/cluster.tar.gz",
+      "ext" : "tar.gz",
+      "version" : "2.1.2",
+      "urls" : ["https://cran.r-project.org/src/contrib/cluster_{version}.tar.gz"],
+      "sha1" : "47763fa44d11e0f2c2feafade3e331c05eda30d1",
+      "resource" : "true"
+    },
+
     "XZ-1.8" : {
       "sha1" : "c4f7d054303948eb6a4066194253886c8af07128",
       "maven" : {
@@ -353,6 +363,7 @@
     "com.oracle.truffle.r.native.recommended" : {
       "dependencies" : [
         "RPART",
+        "CLUSTER",
         "com.oracle.truffle.r.native",
         "com.oracle.truffle.r.engine",
         "com.oracle.truffle.r.ffi.impl",