Fix so that rtorrent builds on 10.5

libcurl.pc is broken on 10.5 (see <http://libtorrent.rakshasa.no/ticket/1117>)
and this is a workaround for that.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/rtorrent.rb

@@ -22,6 +22,11 @@ class Rtorrent <Formula
 
     args = ["--disable-debug", "--disable-dependency-tracking", "--prefix=#{prefix}"]
     args << "--with-xmlrpc-c" if Formula.factory("xmlrpc-c").installed?
+    if MACOS_VERSION == 10.5
+      inreplace 'configure' do |s|
+        s.gsub! '  pkg_cv_libcurl_LIBS=`$PKG_CONFIG --libs "libcurl >= 7.15.4" 2>/dev/null`', '  pkg_cv_libcurl_LIBS=`$PKG_CONFIG --libs "libcurl >= 7.15.4" | sed -e "s/-arch [^-]*/-arch $(uname -m) /" 2>/dev/null`'
+      end
+    end
     system "./configure", *args
     system "make"
     system "make install"