AutoFu --with-ruby with ruby-1.9.2p0 isn't right

The AutoFu to build against ruby-1.9.2p0 isn't correct building rpm-5.3.4.

For starters, ruby-1.9.2p0 needs the ruby_bind_static patch is needed from here:
    http://redmine.ruby-lang.org/issues/show/2294

You will need to edit/install scripts/ruby-config someplace in PATH to
hint the --cppflags and --libs parameters to the RPM_CHECK_LIB m4 macro.

You will also need (if building from cvs) this patch:

Index: configure.ac
===================================================================
RCS file: /v/rpm/cvs/rpm/configure.ac,v
retrieving revision 2.432.2.17
diff -p -u -w -r2.432.2.17 configure.ac
--- configure.ac 20 Sep 2010 21:39:49 -0000
+++ configure.ac 19 Sep 2010 03:28:51 -0000 2.432.2.17
@@ -1486,7 +1486,7 @@ dnl # Ruby
 WITH_RUBY_SUBDIR=""
 RPM_CHECK_LIB(
     [Ruby], [ruby],
- [ruby], [ruby_init], [ruby.h],
+ [ruby-static], [ruby_init], [ruby.h],
     [no,external:none], [],
     [ AC_DEFINE(WITH_RUBYEMBED, 1, [Define to 1 if you want embedded Ruby])
       WITH_RUBY_SUBDIR=ruby

At that point this line in devtool.conf SHOULD build with embedded ruby-1.9.2p0:
    --with-ruby=/your/rubyprefix/here

Note that ruby-1.9.2p0 isn't really ready for use in rpm-5.3.4 yet ... expect difficulties.