New formula: putty

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/putty.rb

@@ -0,0 +1,25 @@
+require 'formula'
+
+class Putty <Formula
+  url 'http://the.earth.li/~sgtatham/putty/latest/putty-0.60.tar.gz'
+  homepage 'http://www.chiark.greenend.org.uk/~sgtatham/putty/'
+  md5 '07e65fd98b16d115ae38a180bfb242e2'
+
+  def install
+    # use the unix build to make all PuTTY command line tools
+    cd "unix"
+    # disable GTK upon configure
+    system "./configure", "--disable-debug", "--disable-dependency-tracking",
+                          "--prefix=#{prefix}",
+                          "--disable-gtktest", "--with-gtk-prefix=/dev/null"
+    system "make VER=-DRELEASE=#{version} all-cli"
+    # install manually
+    bin.install %w{ plink pscp psftp puttygen }
+    cd "../doc"
+    man1.install %w{ plink.1 pscp.1 psftp.1 puttygen.1 }
+  end
+
+  def caveats
+    "This formula did not build the Mac OS X GUI PuTTY.app."
+  end
+end