server_wide_modules should not be saved

[Florent]

The "openerp-server -s" command will save the "server_wide_modules" option in the rc file.
However, this option is not read from the config file. The only way to pass a list of server_wide_modules is using the "--load" switch.

This is the proposed patch:

=== modified file 'openerp/tools/config.py'
--- openerp/tools/config.py 2012-02-10 14:41:14 +0000
+++ openerp/tools/config.py 2012-02-27 20:57:14 +0000
@@ -74,7 +74,7 @@
         # Not exposed in the configuration file.
         self.blacklist_for_save = set(
             ['publisher_warranty_url', 'load_language', 'root_path',
- 'init', 'save', 'config', 'update', 'stop_after_init'])
+ 'init', 'save', 'config', 'update', 'server_wide_modules', 'stop_after_init'])

         # dictionary mapping option destination (keys in self.options) to MyOptions.
         self.casts = {}