Explicitly mark Xcode deps as build-time deps

Formula/chrome-cli.rb

@@ -14,7 +14,7 @@ class ChromeCli < Formula
     sha1 "1ed37da928049461e239d848a77e3cc1838ee17a" => :mountain_lion
   end
 
-  depends_on :xcode
+  depends_on :xcode => :build
   depends_on :macos => :mountain_lion
 
   def install

Formula/fuse4x-kext.rb

@@ -13,7 +13,7 @@ class Fuse4xKext < Formula
     sha1 '6f306f38557d016f5eaa0c999f2092d0767870e6' => :lion
   end
 
-  depends_on :xcode
+  depends_on :xcode => :build
 
   def install
     ENV.delete('CC')

Formula/graphviz.rb

@@ -30,7 +30,7 @@ class Graphviz < Formula
   depends_on "librsvg" => :optional
   depends_on "freetype" => :optional
   depends_on :x11 if build.with? "x"
-  depends_on :xcode if build.with? "app"
+  depends_on :xcode => :build if build.with? "app"
 
   fails_with :clang do
     build 318

Formula/launch.rb

@@ -13,7 +13,7 @@ class Launch < Formula
     sha1 "1166c77e00378087195ad5273685d839dbb9f305" => :lion
   end
 
-  depends_on :xcode
+  depends_on :xcode => :build
 
   def install
     rm_rf "launch" # We'll build it ourself, thanks.

Formula/osxfuse.rb

@@ -13,7 +13,7 @@ class Osxfuse < Formula
   end
 
   depends_on :macos => :snow_leopard
-  depends_on :xcode
+  depends_on :xcode => :build
   depends_on "autoconf" => :build
   depends_on "automake" => :build
   depends_on "libtool" => :build

Formula/qt5.rb

@@ -35,7 +35,7 @@ class Qt5 < Formula
   depends_on "pkg-config" => :build
   depends_on "d-bus" => :optional
   depends_on "mysql" => :optional
-  depends_on :xcode
+  depends_on :xcode => :build
 
   def install
     ENV.universal_binary if build.universal?

Formula/terminal-notifier.rb

@@ -14,7 +14,7 @@ class TerminalNotifier < Formula
   end
 
   depends_on :macos => :mountain_lion
-  depends_on :xcode
+  depends_on :xcode => :build
 
   def install
     xcodebuild "-project", "Terminal Notifier.xcodeproj",

Formula/unar.rb

@@ -8,7 +8,7 @@ class Unar < Formula
 
   head 'https://code.google.com/p/theunarchiver/' , :using => :hg
 
-  depends_on :xcode
+  depends_on :xcode => :build
 
   bottle do
     cellar :any

Formula/xulrunner.rb

@@ -58,7 +58,7 @@ class Xulrunner < Formula
   end
 
   depends_on :macos => :lion # needs clang++
-  depends_on :xcode
+  depends_on :xcode => :build
   depends_on :python => :build
   depends_on Python273Requirement => :build
   depends_on "gnu-tar" => :build