adding SPECs for the latest duplicity on RHEL/CentOS v6

duplicity/duplicity-0.6.24-documentation.patch

@@ -0,0 +1,17 @@
+--- duplicity-0.6.24/setup.py	2014-05-09 13:27:41.000000000 +0000
++++ duplicity-0.6.24/setup.py.documentation	2014-08-16 14:41:57.000000000 +0000
+@@ -48,14 +48,6 @@
+ data_files = [('share/man/man1',
+                ['bin/duplicity.1',
+                 'bin/rdiffdir.1']),
+-              ('share/doc/duplicity-%s' % version_string,
+-               ['COPYING',
+-                'README',
+-                'README-REPO',
+-                'README-LOG',
+-                'tarfile-LICENSE',
+-                'tarfile-CHANGES',
+-                'CHANGELOG']),
+               ]
+ 
+ top_dir = os.path.dirname(os.path.abspath(__file__))