Amend requires to correspond with new Ruby packaging guidelines

Addressing:
ruby-ncurses has broken dependencies in the F-19/rawhide trees

ruby-ncurses.spec

@@ -4,18 +4,18 @@
 
 Name: %distname
 Version: 1.3.1
-Release: 5%{?dist}
+Release: 6%{?dist}
 Summary: A module for ruby applications for using ncurses interfaces
 Group: System Environment/Libraries 
 License: LGPLv2+
 URL: http://ncurses-ruby.berlios.de/
 Source0: http://download.berlios.de/ncurses-ruby/%{realname}-%{version}.tar.bz2
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
-BuildRequires: ruby(abi) = %{rubyabi}
+BuildRequires: ruby(release) >= %{rubyabi}
 BuildRequires: ruby
 BuildRequires: ruby-devel
 BuildRequires: ncurses-devel
-Requires: ruby(abi) = %{rubyabi}
+Requires: ruby(release) >= %{rubyabi}
 Requires: ruby
 Provides: ruby(ncurses) = %{version}-%{release}
 
@@ -50,6 +50,9 @@ ruby extconf.rb --vendor
 %{ruby_vendorlibdir}/ncurses_sugar.rb
 
 %changelog
+* Thu Mar 14 2013 Simon Lukasik <slukasik@redhat.com> - 1.3.1-6
+- Fix build requires for Ruby 2.0 release
+
 * Thu Feb 14 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.3.1-5
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_19_Mass_Rebuild