mkclean: fix compile with XCode-4.3

Fixes compiler error with mkclean-0.8.6 and XCode-4.3+ due to a
hardcoded /Developer and macosx-version-min.  Those are set to the
optimal value by default.

- inreplace was failing due to unnoticed fix upstream.
- remove inreplace
- patch if MacOS.prefer_64_bit, don't set SDK path or min version.

Reported upstream, noted in formula.
https://sourceforge.net/tracker/?func=detail&aid=3505611&group_id=68739&atid=522228

Closes Homebrew/homebrew#10970.

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

Formula/mkclean.rb

@@ -5,17 +5,33 @@ class Mkclean < Formula
   homepage 'http://www.matroska.org/downloads/mkclean.html'
   sha1 'dd59c50178c5d1b11190e466c0562ac3cd64cd71'
 
+  def patches
+    # Fixes compile error with with XCode-4.3+, a hardcoded /Developer.  Reported as:
+    # https://sourceforge.net/tracker/?func=detail&aid=3505611&group_id=68739&atid=522228
+    DATA if MacOS.prefer_64_bit?
+  end
+
   def install
-    ENV.j1 # Otherwise there are races
-
-    # For 64-bit kernels, just use the Snow Leopard SDK.
-    inreplace "corec/tools/coremake/gcc_osx_x64.build" do |s|
-      s.gsub! /10\.4u?/, "10.6"
-    end
-
+    ENV.deparallelize # Otherwise there are races
     system "./configure"
     system "make -C mkclean"
     bindir = `corec/tools/coremake/system_output.sh`.chomp
     bin.install Dir["release/#{bindir}/mk*"]
   end
 end
+
+__END__
+--- a/corec/tools/coremake/gcc_osx_x64.build	2011-09-25 02:25:46.000000000 -0700
++++ b/corec/tools/coremake/gcc_osx_x64.build	2012-03-15 16:27:46.000000000 -0700
+@@ -4,9 +4,9 @@
+ 
+ PLATFORMLIB = osx_x86
+ SVNDIR = osx_x86
+-SDK = /Developer/SDKs/MacOSX10.6.sdk
+ 
+-CCFLAGS=%(CCFLAGS) -arch x86_64 -mdynamic-no-pic -mmacosx-version-min=10.6
++
++CCFLAGS=%(CCFLAGS) -arch x86_64 -mdynamic-no-pic
+ ASMFLAGS = -f macho64 -D_MACHO
+ 
+ #include "gcc_osx.inc"