superenv fix for broken 10.8 apr-1-config

serf requires you to explicitly tell it where to find the supertool because otherwise it has a hardcoded /usr/bin/apr-1-config (:P), ctail however is sensible and searches the PATH so now it's as though we do nothing special in that formula. Nice.

Formula/ctail.rb

@@ -9,16 +9,6 @@ class Ctail < Formula
   depends_on :libtool
 
   def install
-    if MacOS.mountain_lion?
-      # Fixes a bad path returned by `apr-1-config --cpp` on ML.
-      # https://github.com/mxcl/homebrew/issues/13586
-      ENV['CPP'] = "#{ENV.cc} -E"
-      # Use HB libtool not the one from apr that also has a bad path.
-      ENV['APR_LIBTOOL'] = 'glibtool'
-      # Especially for Xcode-only, the apr hearders are needed by glibtool
-      ENV.append 'CPPFLAGS', "-I#{MacOS.sdk_path}/usr/include/apr-1"
-    end
-
     system "./configure", "--prefix=#{prefix}", "--disable-debug"
     system 'make'
     system 'make install'

Formula/serf.rb

@@ -9,20 +9,16 @@ class Serf < Formula
 
   depends_on :libtool
 
+  def apr_bin
+    superbin or "/usr/bin"
+  end
+
   def install
     ENV.universal_binary if build.universal?
-    if MacOS.mountain_lion?
-      # Fixes a bad path returned by `apr-1-config --cpp` on ML.
-      # https://github.com/mxcl/homebrew/issues/13586
-      ENV['CPP'] = "#{ENV.cc} -E"
-      # Use HB libtool not the one from apr that also has a bad path.
-      ENV['APR_LIBTOOL'] = 'glibtool'
-      # Especially for Xcode-only, the apr hearders are needed by glibtool
-      ENV.append 'CPPFLAGS', "-I#{MacOS.sdk_path}/usr/include/apr-1"
-    end
     system "./configure", "--disable-debug",
                           "--disable-dependency-tracking",
-                          "--prefix=#{prefix}"
+                          "--prefix=#{prefix}",
+                          "--with-apr=#{apr_bin}"
     system "make install"
   end
 end