gnu: miredo: Fix creation of .pid file.

* gnu/packages/networking.scm (miredo)[arguments]: Add "--localstatedir=/var"
to #:configure-flags and add 'do-not-create-/run phase to #:phases to remove
code that tries to create a directory inside "@localstatedir@" during install.

Signed-off-by: 宋文武 <iyzsong@member.fsf.org>

gnu/packages/networking.scm

@@ -700,8 +700,16 @@ (define-public miredo
                 "0j9ilig570snbmj48230hf7ms8kvcwi2wblycqrmhh85lksd49ps"))))
     (build-system gnu-build-system)
     (arguments
-     '(#:phases
+     '(#:configure-flags
+       (list "--localstatedir=/var")
+       #:phases
        (modify-phases %standard-phases
+         (add-after 'unpack 'do-not-create-/run
+           (lambda _
+             (substitute* (find-files "src" "Makefile.*")
+               (("^.+install_sh.+/run.+$")
+                "\ttrue"))
+             #t))
          (add-after 'unpack 'patch-iproute2
            (lambda* (#:key inputs #:allow-other-keys)
              (let* ((iproute (assoc-ref inputs "iproute"))