conf2reST.py: Prefer anonymous links

With a single underscore, the "link target" system is used, resulting in
conflicts when the same version name is shared by 2 repos.

HISTORY.rst

@@ -2,6 +2,9 @@
 History
 =======
 
+- conf2reST.py: Prefer anonymous links to avoid conflicts when the same version is shared by 2
+  repos (as the "link target" system would then be in use).
+
 2.8
 ---
 

conf2reST.py

@@ -173,4 +173,8 @@
 
 def write_rst(out, rst, headers=True):
     """Write rst to out (be it an open file or std out).
+
+    We use anonymous links here (2 underscores) to avoid conflicts when the
+    same version is shared by 2 repos (as the "link target" system would then
+    be in use).
     """
@@ -176,4 +180,5 @@
     """
+
     out.write("Versions\n")
     out.write("========\n\n")
     for group in ('odoo', 'modules', 'group of modules', 'other', 'tools'):
@@ -191,10 +196,10 @@
                 version = rst[group][element]['version']
                 repository = rst[group][element].get('repository', '')
                 if repository.startswith('ssh://hg@bitbucket.org/'):
-                    text = '`%s <%s/commits/%s>`_' % (
+                    text = '`%s <%s/commits/%s>`__' % (
                         version, 
                         repository.replace(
                             'ssh://hg@bitbucket.org/',
                             'https://bitbucket.org/'),
                         version)
                 elif repository.startswith('git@bitbucket.org:'):
@@ -195,10 +200,10 @@
                         version, 
                         repository.replace(
                             'ssh://hg@bitbucket.org/',
                             'https://bitbucket.org/'),
                         version)
                 elif repository.startswith('git@bitbucket.org:'):
-                    text = '`%s <%s/commits/%s>`_' % (
+                    text = '`%s <%s/commits/%s>`__' % (
                         version, 
                         repository.replace(
                             'git@bitbucket.org:',