formula for argp-standalone 1.3

* argp-standalone fails with LLVM

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/argp-standalone.rb

@@ -0,0 +1,17 @@
+require 'formula'
+
+class ArgpStandalone <Formula
+  url 'http://www.lysator.liu.se/~nisse/misc/argp-standalone-1.3.tar.gz'
+  homepage 'http://www.lysator.liu.se/~nisse/misc/'
+  md5 '720704bac078d067111b32444e24ba69'
+
+  def install
+    fails_with_llvm
+
+    system "./configure", "--disable-debug", "--disable-dependency-tracking", "--prefix=#{prefix}"
+    system "make"
+
+    include.install ['argp.h', 'argp-fmtstream.h', 'argp-namefrob.h']
+    lib.install 'libargp.a'
+  end
+end