gnu: libffi: Update to 3.3.

* gnu/packages/patches/libffi-3.2.1-complex-alpha.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): Adjust accordingly.
* gnu/packages/libffi.scm (libffi): Update to 3.3.
[source](patches): Remove.
* gnu/packages/python.scm (python-3.7)[arguments]: Remove workaround.

gnu/local.mk

@@ -1066,7 +1066,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/libgnome-encoding.patch			\
   %D%/packages/patches/libgnomeui-utf8.patch			\
   %D%/packages/patches/libgpg-error-gawk-compat.patch		\
-  %D%/packages/patches/libffi-3.2.1-complex-alpha.patch		\
   %D%/packages/patches/libjpeg-turbo-CVE-2019-2201.patch	\
   %D%/packages/patches/libjxr-fix-function-signature.patch	\
   %D%/packages/patches/libjxr-fix-typos.patch			\

gnu/packages/libffi.scm

@@ -41,7 +41,7 @@
 (define-public libffi
   (package
     (name "libffi")
-    (version "3.2.1")
+    (version "3.3")
     (source (origin
               (method url-fetch)
               (uri
@@ -49,21 +49,12 @@
                               name "-" version ".tar.gz"))
               (sha256
                (base32
-                "0dya49bnhianl0r65m65xndz6ls2jn1xngyn72gd28ls3n7bnvnh"))
-              (patches (search-patches "libffi-3.2.1-complex-alpha.patch"))))
+                "0mi0cpf8aa40ljjmzxb7im6dbj45bb0kllcd09xgmp834y9agyvj"))))
     (build-system gnu-build-system)
     (arguments
      `(;; Prevent the build system from passing -march and -mtune to the
        ;; compiler.  See "ax_cc_maxopt.m4" and "ax_gcc_archflag.m4".
-       #:configure-flags '("--enable-portable-binary" "--without-gcc-arch")
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'install 'post-install
-           (lambda* (#:key outputs #:allow-other-keys)
-             (define out (assoc-ref outputs "out"))
-             (symlink (string-append out "/lib/libffi-3.2.1/include")
-                      (string-append out "/include"))
-             #t)))))
+       #:configure-flags '("--enable-portable-binary" "--without-gcc-arch")))
     (outputs '("out" "debug"))
     (synopsis "Foreign function call interface library")
     (description

gnu/packages/patches/libffi-3.2.1-complex-alpha.patch

@@ -1,28 +0,0 @@
-The patch fixes build failure of form:
-     ../src/alpha/osf.S:298:2: error: #error "osf.S out of sync with ffi.h"
-Upstream fixed the bug in a more invasive way
-but didn't have releases since 3.2.1.
-
-The patch is taken from Gentoo:
-https://gitweb.gentoo.org/repo/gentoo.git/tree/dev-libs/libffi/files/libffi-3.2.1-complex_alpha.patch
-
---- libffi-3.2.1/src/alpha/osf.S	2015-01-16 10:46:15.000000000 +0100
-+++ libffi-3.2.1/src/alpha/osf.S	2015-01-16 10:46:24.000000000 +0100
-@@ -279,6 +279,7 @@
- 	.gprel32 $load_64	# FFI_TYPE_SINT64
- 	.gprel32 $load_none	# FFI_TYPE_STRUCT
- 	.gprel32 $load_64	# FFI_TYPE_POINTER
-+	.gprel32 $load_none	# FFI_TYPE_COMPLEX
- 
- /* Assert that the table above is in sync with ffi.h.  */
- 
-@@ -294,7 +295,8 @@
- 	|| FFI_TYPE_SINT64 != 12	\
- 	|| FFI_TYPE_STRUCT != 13	\
- 	|| FFI_TYPE_POINTER != 14	\
--	|| FFI_TYPE_LAST != 14
-+	|| FFI_TYPE_COMPLEX != 15       \
-+	|| FFI_TYPE_LAST != 15
- #error "osf.S out of sync with ffi.h"
- #endif
- 

gnu/packages/python.scm

@@ -377,12 +377,7 @@ data types.")
                 " --exclude test_mmap"
                 ;; test_socket may hang and eventually run out of memory
                 ;; on some systems: <https://bugs.python.org/issue34587>.
-                " test_socket"
-                ;; XXX: test_ctypes fails on some platforms due to a problem in
-                ;; libffi 3.2.1: <https://bugs.python.org/issue23249>.
-                ,@(if (string-prefix? "aarch64" (%current-system))
-                      '(" test_ctypes")
-                      '()))))
+                " test_socket")))
        ((#:phases phases)
        `(modify-phases ,phases
           (add-before 'check 'set-TZDIR