gnu: lsh: Upgrade to 2.1.

* gnu/packages/lsh.scm (lsh): Upgrade to 2.1.  Add Nettle as an input.
  Remove now unneeded patches.
* gnu/packages/patches/lsh-guile-compat.patch,
  gnu/packages/patches/lsh-no-root-login.patch,
  gnu/packages/patches/lsh-pam-service-name.patch: Remove.
* gnu-system.am (dist_patch_DATA): Remove them.

gnu-system.am

@@ -196,9 +196,6 @@ dist_patch_DATA =						\
   gnu/packages/patches/libapr-skip-getservbyname-test.patch	\
   gnu/packages/patches/libevent-dns-tests.patch			\
   gnu/packages/patches/libtool-skip-tests.patch			\
-  gnu/packages/patches/lsh-guile-compat.patch			\
-  gnu/packages/patches/lsh-no-root-login.patch			\
-  gnu/packages/patches/lsh-pam-service-name.patch		\
   gnu/packages/patches/m4-gets-undeclared.patch			\
   gnu/packages/patches/m4-readlink-EINVAL.patch			\
   gnu/packages/patches/m4-s_isdir.patch				\

gnu/packages/lsh.scm

@@ -24,6 +24,7 @@
   #:use-module (gnu packages)
   #:use-module (gnu packages m4)
   #:use-module (gnu packages linux)
+  #:use-module (gnu packages nettle)
   #:use-module ((gnu packages compression)
                 #:renamer (symbol-prefix-proc 'guix:))
   #:use-module (gnu packages multiprecision)
@@ -52,7 +53,7 @@
 (define-public lsh
   (package
     (name "lsh")
-    (version "2.0.4")
+    (version "2.1")
     (source
      (origin
       (method url-fetch)
@@ -60,10 +61,11 @@
                           version ".tar.gz"))
       (sha256
        (base32
-        "149hf49xcj99wwvi7hcb59igq4vpyv8har1br1if3lrsw5irsjv1"))))
+        "1qqjy9zfzgny0rkb27c8c7dfsylvb6n0ld8h3an2r83pmaqr9gwb"))))
     (build-system gnu-build-system)
     (inputs
-     `(("linux-pam" ,linux-pam)
+     `(("nettle" ,nettle)
+       ("linux-pam" ,linux-pam)
        ("m4" ,m4)
        ("readline" ,readline)
        ("liboop" ,liboop)
@@ -72,17 +74,9 @@
        ("guile" ,guile-final)
        ("gperf" ,gperf)
        ("psmisc" ,psmisc)                         ; for `killall'
-
-       ("patch/no-root-login" ,(search-patch "lsh-no-root-login.patch"))
-       ("patch/guile-compat" ,(search-patch "lsh-guile-compat.patch"))
-       ("patch/pam-service-name"
-        ,(search-patch "lsh-pam-service-name.patch"))))
+       ))
     (arguments
-     '(#:patches (list (assoc-ref %build-inputs "patch/no-root-login")
-                       (assoc-ref %build-inputs "patch/pam-service-name")
-                       (assoc-ref %build-inputs "patch/guile-compat"))
-
-       ;; Skip the `configure' test that checks whether /dev/ptmx &
+     '(;; Skip the `configure' test that checks whether /dev/ptmx &
        ;; co. work as expected, because it relies on impurities (for
        ;; instance, /dev/pts may be unavailable in chroots.)
        #:configure-flags '("lsh_cv_sys_unix98_ptys=yes")

gnu/packages/patches/lsh-guile-compat.patch

@@ -1,9 +0,0 @@
-Use (ice-9 rdelim) for `read-line'.
-
---- lsh-2.0.4/src/scm/guile-compat.scm	2012-12-03 23:28:01.000000000 +0100
-+++ lsh-2.0.4/src/scm/guile-compat.scm	2012-12-03 23:28:04.000000000 +0100
-@@ -21,3 +21,4 @@
- ;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- 
- (use-syntax (ice-9 syncase))
-+(use-modules (ice-9 rdelim))

gnu/packages/patches/lsh-no-root-login.patch

@@ -1,16 +0,0 @@
-Correctly handle the `--no-root-login' option.
-
---- lsh-2.0.4/src/lshd.c	2006-05-01 13:47:44.000000000 +0200
-+++ lsh-2.0.4/src/lshd.c	2009-09-08 12:20:36.000000000 +0200
-@@ -758,6 +758,10 @@ main_argp_parser(int key, char *arg, str
-       self->allow_root = 1;
-       break;
- 
-+    case OPT_NO_ROOT_LOGIN:
-+      self->allow_root = 0;
-+      break;
-+
-     case OPT_KERBEROS_PASSWD:
-       self->pw_helper = PATH_KERBEROS_HELPER;
-       break;
-

gnu/packages/patches/lsh-pam-service-name.patch

@@ -1,14 +0,0 @@
-Tell `lsh-pam-checkpw', the PAM password helper program, to use a more
-descriptive service name.
-
---- lsh-2.0.4/src/lsh-pam-checkpw.c	2003-02-16 22:30:10.000000000 +0100
-+++ lsh-2.0.4/src/lsh-pam-checkpw.c	2008-11-28 16:16:58.000000000 +0100
-@@ -38,7 +38,7 @@
- #include <security/pam_appl.h>
- 
- #define PWD_MAXLEN 1024
--#define SERVICE_NAME "other"
-+#define SERVICE_NAME "lshd"
- #define TIMEOUT 600 
- 
- static int