ruby: upstream patch for shared library reference to _environ

Hey, we can compile vim against Ruby 1.9 now!

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Library/Formula/ruby.rb

@@ -25,6 +25,9 @@ class Ruby < Formula
     build 2326
   end
 
+  # https://github.com/ruby/ruby/commit/2741a598ff9e561c71eb39a57bb19c0a3205eaef
+  def patches; DATA end
+
   def install
     system "autoconf" if build.head?
 
@@ -60,3 +63,22 @@ def caveats; <<-EOS.undent
     EOS
   end
 end
+
+__END__
+diff --git a/missing/setproctitle.c b/missing/setproctitle.c
+index 169ba8b..4dc6d03 100644
+--- a/missing/setproctitle.c
++++ b/missing/setproctitle.c
+@@ -48,6 +48,12 @@
+ #endif
+ #include <string.h>
+
++#if defined(__APPLE__)
++#include <crt_externs.h>
++#undef environ
++#define environ (*_NSGetEnviron())
++#endif
++
+ #define SPT_NONE	0	/* don't use it at all */
+ #define SPT_PSTAT	1	/* use pstat(PSTAT_SETCMD, ...) */
+ #define SPT_REUSEARGV	2	/* cover argv with title information */