sdelta3: migrate to boneyard

The original website doesn’t exist anymore, the download URL doesn’t
work and there are no mirrors. Debian doesn’t provide any package for
it, like Fedora and MacPorts.

Closes Homebrew/homebrew#40436.

Signed-off-by: Baptiste Fontaine <batifon@yahoo.fr>

Formula/sdelta3.rb

@@ -1,42 +0,0 @@
-require 'formula'
-
-class Sdelta3 < Formula
-  desc "Output tiny highly compressible patches"
-  homepage 'http://sdelta.berlios.de/'
-  url 'ftp://ftp.berlios.de//pub/sdelta/files/sdelta3-20100323.tar.bz2'
-  sha1 'd99718e95b2828f2d4ec376a16b5fedc950792ee'
-
-  patch :DATA
-
-  def install
-    # Sdelta3 code is not 64-bit clean
-    ENV.m32
-
-    # fix verbatim references to /usr
-    inreplace 'sd3', "/usr/share", "#{HOMEBREW_PREFIX}/share"
-
-    # fix incorrect help message referencing LICENSE file in sdelta3.c:
-    # Makefile installs LICENSE into /usr/share/sdelta3, not into /usr/doc/sdelta
-    inreplace 'sdelta3.c', "/usr/doc/sdelta", "#{HOMEBREW_PREFIX}/share/#{name}"
-
-    system "make", "CC=#{ENV.cc}",
-                   "CFLAGS=#{ENV.cflags}",
-                   "PREFIX=#{prefix}",
-                   "install"
-  end
-end
-
-__END__
-diff --git a/input.h b/input.h
-index 64c67bb..04d1b6e 100644
---- a/input.h
-+++ b/input.h
-@@ -11,6 +11,8 @@
- #include <sys/user.h>
- #elif defined(__NetBSD__)
- #include <sys/vmparam.h>
-+#elif defined(__MACH__)
-+#include <mach/mach.h>
- #else
- #include <sys/param.h>
- #if (defined(sun) || defined(__sun)) && !defined(PAGE_SIZE)