Make libqrencode an alias of qrencode

Remove outdated libqrencode formula in favor of up-to-date qrencode formula.
Add libqrencode alias for qrencode.

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

Aliases/libqrencode

@@ -0,0 +1 @@
+../Formula/qrencode.rb

Formula/libqrencode.rb

@@ -1,14 +0,0 @@
-require 'formula'
-
-class Libqrencode <Formula
-  url 'http://megaui.net/fukuchi/works/qrencode/qrencode-3.1.0.tar.gz'
-  homepage 'http://megaui.net/fukuchi/works/qrencode/index.en.html'
-  md5 'fc300af948b36b2197ede0d131c12e21'
-
-  depends_on 'pkg-config' => :build
-
-  def install
-    system "./configure", "--prefix=#{prefix}"
-    system "make install"
-  end
-end