Simplify printing conflicts in brew info

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

Library/Homebrew/cmd/info.rb

@@ -68,10 +68,7 @@ module Homebrew extend self
     end
 
     puts "Depends on: #{f.deps*', '}" unless f.deps.empty?
-    conflicts = []
-    f.requirements.each do |dep|
-      conflicts << dep.formula if dep.is_a? ConflictRequirement
-    end
+    conflicts = f.conflicts.map { |c| c.formula }
     puts "Conflicts with: #{conflicts*', '}" unless conflicts.empty?
 
     if f.rack.directory?

Library/Homebrew/formula.rb

@@ -425,6 +425,10 @@ class Formula
   def deps;         self.class.dependencies.deps;         end
   def requirements; self.class.dependencies.requirements; end
 
+  def conflicts
+    requirements.select { |r| r.is_a? ConflictRequirement }
+  end
+
   # deps are in an installable order
   # which means if a depends on b then b will be ordered before a in this list
   def recursive_deps