fontforge: add --without-python option

FontForge will compile with newer Homebrew-built versions of Python, but
I have an older one and needed this to work to test Lilypad builds.

Formula/fontforge.rb

@@ -11,15 +11,20 @@ class Fontforge < Formula
   depends_on 'pango'
   depends_on 'potrace'
 
+  def options
+    [['--without-python', 'Build without Python.']]
+  end
+
   fails_with_llvm "Compiling cvexportdlg.c fails with error: initializer element is not constant"
 
   def install
+    args = ["--prefix=#{prefix}", "--enable-double", "--without-freetype-bytecode"]
+    args << "--without-python" if ARGV.include? "--without-python"
+
     ENV.x11
     # Fix linker error; see: http://trac.macports.org/ticket/25012
     ENV.append "LDFLAGS", "-lintl"
-    system "./configure", "--prefix=#{prefix}",
-                          "--enable-double",
-                          "--without-freetype-bytecode"
+    system "./configure", *args
 
     inreplace "Makefile" do |s|
       s.gsub! "/Applications", "$(prefix)"