move mach.rb to os/mac/mach.rb

Library/Homebrew/extend/pathname.rb

@@ -1,13 +1,10 @@
 require "pathname"
-require "mach"
 require "resource"
 require "metafiles"
 
 # Homebrew extends Ruby's `Pathname` to make our code more readable.
 # @see http://ruby-doc.org/stdlib-1.8.7/libdoc/pathname/rdoc/Pathname.html  Ruby's Pathname API
 class Pathname
-  include MachO
-
   # @private
   BOTTLE_EXTNAME_RX = /(\.[a-z0-9_]+\.bottle\.(\d+\.)?tar\.gz)$/
 

Library/Homebrew/os/mac.rb

@@ -2,6 +2,7 @@ require "hardware"
 require "os/mac/version"
 require "os/mac/xcode"
 require "os/mac/xquartz"
+require "os/mac/pathname"
 
 module OS
   module Mac

Library/Homebrew/os/mac/hardware.rb

@@ -1,4 +1,4 @@
-require "mach"
+require "os/mac/mach"
 
 module MacCPUs
   OPTIMIZATION_FLAGS = {

Library/Homebrew/os/mac/pathname.rb

@@ -0,0 +1,5 @@
+require "os/mac/mach"
+
+class Pathname
+  include MachO
+end