Revert SHA updates 5f4603b, 8320aca

GitHub had a hiccough---SHA checksums really didn't change.

This reverts commit 5f4603b230c90d7ccc875f9ffe1e93900cf057b5.
This reverts commit 8320aca3f014f3b87b77fcd4316534f03a1a0475.

Ref Homebrew/homebrew#18501.

Formula/io.rb

@@ -3,7 +3,7 @@ require 'formula'
 class Io < Formula
   homepage 'http://iolanguage.com/'
   url 'https://github.com/stevedekorte/io/archive/2011.09.12.tar.gz'
-  sha1 '9c3110c229e2c4bd9713052675b68fc5082d94cf'
+  sha1 'edb63aa4ee87052f1512f0770e0c9a9b1ba91082'
 
   head 'https://github.com/stevedekorte/io.git'
 

Formula/macvim.rb

@@ -4,7 +4,7 @@ class Macvim < Formula
   homepage 'http://code.google.com/p/macvim/'
   url 'https://github.com/b4winckler/macvim/tarball/snapshot-66'
   version '7.3-66'
-  sha1 'b8e4f2dcb0c781720827bf770deed24202d263fb'
+  sha1 'd11696f7089688fa96a45fc57410c60f6ca5a394'
 
   head 'https://github.com/b4winckler/macvim.git', :branch => 'master'