Add more general support for passing credentials to curl

Formula/ksh.rb

@@ -3,7 +3,8 @@ require "formula"
 class Ksh < Formula
   homepage "http://www.kornshell.com"
   url  "http://www2.research.att.com/~astopen/download/tgz/ast-ksh.2012-08-01.tgz",
-    :using => AttResearchDownloadStrategy
+    :using => NoUnzipCurlDownloadStrategy,
+    :user => "I accept www.opensource.org/licenses/eclipse:."
   sha1 "316428e9937806183a134aa1669dea40c3a73695"
   version "93u+" # Versioning scheme: + means "+ patches", - means "beta/alpha".
 
@@ -17,7 +18,8 @@ class Ksh < Formula
 
   resource "init" do
     url "http://www2.research.att.com/~astopen/download/tgz/INIT.2012-08-01.tgz",
-      :using => AttResearchDownloadStrategy
+      :using => NoUnzipCurlDownloadStrategy,
+      :user => "I accept www.opensource.org/licenses/eclipse:."
     sha1 "0b472a615db384fe707042baaa3347dc1aa1c81e"
   end
 

Formula/vcodex.rb

@@ -3,7 +3,7 @@ require 'formula'
 class Vcodex < Formula
   homepage 'http://www2.research.att.com/~astopen/download/ref/vcodex/vcodex.html'
   url 'http://www2.research.att.com/~astopen/download/tgz/vcodex.2013-05-31.tgz',
-      :using => AttResearchDownloadStrategy
+    :user => "I accept www.opensource.org/licenses/eclipse:."
   sha1 '0423ee95b13069dd617c5f7625484a92d5068ea0'
   version '2013-05-31'
 

Formula/vmalloc.rb

@@ -3,7 +3,7 @@ require "formula"
 class Vmalloc < Formula
   homepage "http://www2.research.att.com/sw/download/"
   url "http://www2.research.att.com/~astopen/download/tgz/vmalloc.2013-05-31.tgz",
-    :using => AttResearchDownloadStrategy
+    :user => "I accept www.opensource.org/licenses/eclipse:."
   sha1 "c656a820503c2f6e7ec19d6b42f2fa0fcefc33b0"
   version "2013-05-31"