openssl: Edit comments

OpenSSL is provided mostly for Leopard, but some things on Snow Leopard
need a newer version as well (such as VirtualBox.)

OpenSSL will build *32-bit only* by default, even on Snow Leopard.

Building Universal requires some extra effort, which has not yet
been put into place. Specifically, it is not enough to do:
    ENV.universal_build
Builds need to be run separately for 32 and 64 bit, and then
lipo needs to be used to put together the library archives.

Formula/openssl.rb

@@ -7,20 +7,20 @@ class Openssl < Formula
   md5 '0352932ea863bc02b056cda7c9ac5b79'
 
   keg_only :provided_by_osx,
-            "OpenSSL provided by Leopard is too old for newer software to link against."
-
-  def options
-    [["--universal", "Build a universal binary."]]
-  end
+    "The OpenSSL provided by Leopard (0.9.7) is too old for some software."
 
   def install
-    ENV.universal_binary if ARGV.build_universal?
-    ENV.j1 # Breaks on Mac Pro
     system "./config", "--prefix=#{prefix}",
                        "--openssldir=#{etc}",
                        "zlib-dynamic", "shared"
+    ENV.j1 # Parallel compilation fails
     system "make"
     system "make test"
     system "make install"
   end
+
+  def caveats; <<-EOS.undent
+    Note that the libraries built tend to be 32-bit only, even on Snow Leopard.
+    EOS
+  end
 end