Fix closes issue12683 - urljoin to work with relative join of svn scheme.
diff --git a/Lib/urllib/parse.py b/Lib/urllib/parse.py
index 45ae202..01067ae 100644
--- a/Lib/urllib/parse.py
+++ b/Lib/urllib/parse.py
@@ -38,7 +38,8 @@
# A classification of schemes ('' means apply by default)
uses_relative = ['ftp', 'http', 'gopher', 'nntp', 'imap',
'wais', 'file', 'https', 'shttp', 'mms',
- 'prospero', 'rtsp', 'rtspu', '', 'sftp']
+ 'prospero', 'rtsp', 'rtspu', '', 'sftp',
+ 'svn', 'svn+ssh']
uses_netloc = ['ftp', 'http', 'gopher', 'nntp', 'telnet',
'imap', 'wais', 'file', 'mms', 'https', 'shttp',
'snews', 'prospero', 'rtsp', 'rtspu', 'rsync', '',