libmemcached: fix "tr1/cintypes" error on 10.9.

Closes Homebrew/homebrew#22259.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Formula/libmemcached.rb

@@ -13,4 +13,30 @@ class Libmemcached < Formula
     system "./configure", "--prefix=#{prefix}"
     system "make install"
   end
+
+  def patches
+    if MacOS.version >= :mavericks and ENV.compiler == :clang
+      # build fix for tr1 -> std
+      DATA
+    end
+  end
+
 end
+
+__END__
+diff --git a/libmemcached-1.0/memcached.h b/libmemcached-1.0/memcached.h
+index 3c11f61..dcee395 100644
+--- a/libmemcached-1.0/memcached.h
++++ b/libmemcached-1.0/memcached.h
+@@ -43,7 +43,11 @@
+ #endif
+
+ #ifdef __cplusplus
++#ifdef _LIBCPP_VERSION
++#  include <cinttypes>
++#else
+ #  include <tr1/cinttypes>
++#endif
+ #  include <cstddef>
+ #  include <cstdlib>
+ #else