Update revisions on bottled libpng dependents

Formula/gd.rb

@@ -4,6 +4,7 @@ class Gd < Formula
   homepage 'http://libgd.bitbucket.org/'
   url 'https://bitbucket.org/libgd/gd-libgd/downloads/libgd-2.1.0.tar.gz'
   sha1 'a0f3053724403aef9e126f4aa5c662573e5836cd'
+  revision 1
 
   bottle do
     cellar :any
@@ -16,10 +17,10 @@ class Gd < Formula
 
   option :universal
 
-  depends_on :libpng => :recommended
+  depends_on 'libpng' => :recommended
   depends_on 'jpeg' => :recommended
-  depends_on :fontconfig => :optional
-  depends_on :freetype => :optional
+  depends_on 'fontconfig' => :optional
+  depends_on 'freetype' => :optional
   depends_on 'libtiff' => :optional
   depends_on 'libvpx' => :optional
 

Formula/ghostscript.rb

@@ -2,6 +2,7 @@ require 'formula'
 
 class Ghostscript < Formula
   homepage 'http://www.ghostscript.com/'
+  revision 1
 
   stable do
     url 'http://downloads.ghostscript.com/public/ghostscript-9.10.tar.gz'
@@ -41,10 +42,10 @@ class Ghostscript < Formula
   depends_on 'libtiff'
   depends_on 'jbig2dec'
   depends_on 'little-cms2'
-  depends_on :libpng
+  depends_on 'libpng'
   depends_on :x11 => ['2.7.2', :optional]
   depends_on 'djvulibre' if build.with? 'djvu'
-  depends_on 'freetype' if MacOS.version == :snow_leopard
+  depends_on 'freetype'
 
   conflicts_with 'gambit-scheme', :because => 'both install `gsc` binaries'
 

Formula/graphviz.rb

@@ -4,6 +4,7 @@ class Graphviz < Formula
   homepage 'http://graphviz.org/'
   url 'http://graphviz.org/pub/graphviz/stable/SOURCES/graphviz-2.36.0.tar.gz'
   sha1 'a41e9f1cbcc9a24651e14dd15a4cda3d912d7d19'
+  revision 1
 
   bottle do
     sha1 "43edebeebd741085c814109b4a5721b382728968" => :mavericks
@@ -22,14 +23,14 @@ class Graphviz < Formula
   option 'with-app', 'Build GraphViz.app (requires full XCode install)'
   option 'with-gts', 'Build with GNU GTS support (required by prism)'
 
-  depends_on :libpng
+  depends_on "libpng"
 
   depends_on 'pkg-config' => :build
   depends_on 'pango' if build.with? "pangocairo"
   depends_on 'swig' if build.with? "bindings"
   depends_on 'gts' => :optional
   depends_on "librsvg" => :optional
-  depends_on :freetype if build.with? "freetype" or MacOS::X11.installed?
+  depends_on "freetype" if build.with? "freetype" or MacOS::X11.installed?
   depends_on :x11 if build.with? "x" or MacOS::X11.installed?
   depends_on :xcode if build.with? "app"
 

Formula/imagemagick.rb

@@ -7,6 +7,7 @@ class Imagemagick < Formula
   # Tarball and checksum from: http://www.imagemagick.org/download
   url 'https://downloads.sf.net/project/machomebrew/mirror/ImageMagick-6.8.7-7.tar.bz2'
   sha256 '4d8b0889d78cca2f1501b5f66f61c5efcd2f585a03002f2a7b407c11808e5e28'
+  revision 1
 
   head 'https://www.imagemagick.org/subversion/ImageMagick/trunk',
     :using => UnsafeSubversionDownloadStrategy
@@ -28,11 +29,11 @@ class Imagemagick < Formula
   depends_on 'pkg-config' => :build
 
   depends_on 'jpeg' => :recommended
-  depends_on :libpng => :recommended
-  depends_on :freetype => :recommended
+  depends_on 'libpng' => :recommended
+  depends_on 'freetype' => :recommended
 
   depends_on :x11 => :optional
-  depends_on :fontconfig => :optional
+  depends_on 'fontconfig' => :optional
   depends_on 'libtiff' => :optional
   depends_on 'little-cms' => :optional
   depends_on 'little-cms2' => :optional

Formula/s-lang.rb

@@ -5,6 +5,7 @@ class SLang < Formula
   url 'ftp://space.mit.edu/pub/davis/slang/v2.2/slang-2.2.4.tar.bz2'
   mirror 'http://pkgs.fedoraproject.org/repo/pkgs/slang/slang-2.2.4.tar.bz2/7fcfd447e378f07dd0c0bae671fe6487/slang-2.2.4.tar.bz2'
   sha1 '34e68a993888d0ae2ebc7bc31b40bc894813a7e2'
+  revision 1
 
   bottle do
     sha1 "312ff6dd9da406831aeeaeee312317f759e0b4a2" => :mavericks
@@ -12,7 +13,7 @@ class SLang < Formula
     sha1 "7181f19055794dc55e27ad29d89e5d872d5e7e40" => :lion
   end
 
-  depends_on :libpng
+  depends_on 'libpng'
   depends_on 'pcre' => :optional
   depends_on 'oniguruma' => :optional