Unify indentation of access modifiers

These are class method calls, not some special keyword, and should be
indented as such (also all standard Ruby indenters do this).

Library/Homebrew/download_strategy.rb

@@ -123,6 +123,7 @@ class CurlDownloadStrategy < AbstractDownloadStrategy
   end
 
   private
+
   def chdir
     entries=Dir['*']
     case entries.length
@@ -494,6 +495,7 @@ class CVSDownloadStrategy < AbstractDownloadStrategy
   end
 
   private
+
   def split_url(in_url)
     parts=in_url.sub(%r[^cvs://], '').split(/:/)
     mod=parts.pop

Library/Homebrew/keg.rb

@@ -172,6 +172,7 @@ class Keg < Pathname
   end
 
   protected
+
   def resolve_any_conflicts dst
     # if it isn't a directory then a severe conflict is about to happen. Let
     # it, and the exception that is generated will message to the user about