curl security update

[Leo Famulari <leo@famulari.name>]

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There are some new bugs disclosed in curl:
https://curl.haxx.se/docs/security.html

Grafting the new version seems like the right approach to me when I
consider libcurl's ABI compatibility policy:
https://curl.haxx.se/libcurl/abi.html

Thoughts?

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From ef6ae3732facb1eba77e82c6a6066832784bca5d Mon Sep 17 00:00:00 2001
From: Leo Famulari <leo@famulari.name>
Date: Wed, 3 Aug 2016 16:13:09 -0400
Subject: [PATCH] gnu: curl: Replace with 7.50.1 [fixes
 CVE-2016-{3739,4802,5419,5420,5421].

* gnu/packages/curl.scm (curl)[replacement]: New field.
(curl-7.50.1): New variable.
---
 gnu/packages/curl.scm | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/gnu/packages/curl.scm b/gnu/packages/curl.scm
index 222910b..a250bb1 100644
--- a/gnu/packages/curl.scm
+++ b/gnu/packages/curl.scm
@@ -40,6 +40,7 @@
 (define-public curl
   (package
    (name "curl")
+   (replacement curl-7.50.1)
    (version "7.47.0")
    (source (origin
             (method url-fetch)
@@ -123,3 +124,16 @@ tunneling, and so on.")
    (license (license:non-copyleft "file://COPYING"
                                   "See COPYING in the distribution."))
    (home-page "http://curl.haxx.se/")))
+
+(define curl-7.50.1
+  (package
+    (inherit curl)
+    (source
+      (let ((version "7.50.1"))
+        (origin
+          (method url-fetch)
+          (uri (string-append "https://curl.haxx.se/download/curl-"
+                              version ".tar.lzma"))
+          (sha256
+           (base32
+            "0qc3qp3h18v24irzw7dgg1jf39v4hnz8irv83v9lbn9rxzrpdcdj")))))))
-- 
2.9.2


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