gnu: r: Update to 3.2.1.

* gnu/packages/statistics.scm (r): Update to 3.2.1.
* gnu/packages/patches/r-fix-15899.patch: Remove file.
* gnu-system.am (dist_patch_DATA): Remove it.

gnu-system.am

@@ -579,7 +579,6 @@ dist_patch_DATA =						\
   gnu/packages/patches/qt4-tests.patch				\
   gnu/packages/patches/qt5-conflicting-typedefs.patch		\
   gnu/packages/patches/qt5-runpath.patch			\
-  gnu/packages/patches/r-fix-15899.patch			\
   gnu/packages/patches/ratpoison-shell.patch			\
   gnu/packages/patches/readline-link-ncurses.patch		\
   gnu/packages/patches/ripperx-libm.patch			\

gnu/packages/patches/r-fix-15899.patch

@@ -1,17 +0,0 @@
-Without the "extern" keyword external applications linking against R (such as
-Shogun, for example) might not be linkable.
-
-See https://bugs.r-project.org/bugzilla3/show_bug.cgi?id=15899 for details
-about this bug.
-
---- a/src/include/Rinterface.h	(revision 66251)
-+++ b/src/include/Rinterface.h	(working copy)
-@@ -84,7 +84,7 @@
- void fpu_setup(Rboolean);
- 
- /* in unix/system.c */
--int R_running_as_main_program; 
-+extern int R_running_as_main_program; 
- 
- #ifdef CSTACK_DEFNS
- /* duplicating Defn.h */

gnu/packages/statistics.scm

@@ -42,7 +42,7 @@
 (define-public r
   (package
     (name "r")
-    (version "3.2.0")
+    (version "3.2.1")
     (source (origin
               (method url-fetch)
               (uri (string-append "mirror://cran/src/base/R-"
@@ -50,8 +50,7 @@
                                   version ".tar.gz"))
               (sha256
                (base32
-                "0dagyqgvi8i3nw158qi2zpwm04s4ffzvnmk5niaksvxs30zrbbpm"))
+                "10n9yhs55v1nnmdgsrgfncw29vq3ly70n8gvy1f4lq7l0hzvr7fm"))))
-              (patches (list (search-patch "r-fix-15899.patch")))))
     (build-system gnu-build-system)
     (arguments
      `(#:make-flags