gnu: Add base64enc.

* gnu/packages/statistics.scm (r-base64enc): New variable.

gnu/packages/statistics.scm

@@ -1719,3 +1719,21 @@ (define-public r-dt
                    license:asl2.0
                    (license:non-copyleft "http://www.wtfpl.net/txt/copying/")))))
 
+(define-public r-base64enc
+  (package
+    (name "r-base64enc")
+    (version "0.1-3")
+    (source (origin
+              (method url-fetch)
+              (uri (cran-uri "base64enc" version))
+              (sha256
+               (base32
+                "13b89fhg1nx7zds82a0biz847ixphg9byf5zl2cw9kab6s56v1bd"))))
+    (build-system r-build-system)
+    (home-page "http://www.rforge.net/base64enc")
+    (synopsis "Tools for Base64 encoding")
+    (description
+     "This package provides tools for handling Base64 encoding.  It is more
+flexible than the orphaned \"base64\" package.")
+    (license license:gpl2+)))
+