In OpenERP 7.0-20131109-002558 added the below code:-
class res_users(osv.osv): 
      _inherit = "res.users" 
      _columns = {
            'fieldname_id'  : fields.many2one("master.table",  "Data"),
      }
res_users()
Depends added in __openerp__.py
"depends" :  ["base", "master_module"],
xml Code
<?xml version="1.0"?>
<openerp>
    <data>
    <record model="ir.ui.view" id="view_resuser_field_form">
        <field name="name">resusers_field_form</field>
        <field name="model">res.users</field>
        <field name="inherit_id" ref="base.view_users_form"/>
        <field name="type">form</field>
        <field name="arch" type="xml">
        <xpath expr="//notebook" position="inside">
            <page string="Exta Details">
               <group col="4">
                  <field name="fieldname_id"/>
                </group>
             </page>
        </xpath>
        </field>
    </record>
    </data>
</openerp>
After restarting the server its shows blank white page in the log file below error shows:-
File "D:\Program Files\OpenERP 7.0-20131109-002558\Server\server\openerp\addons\base\res\res_users.py", line 363, in context_get
  File "D:\Program Files\OpenERP 7.0-20131109-002558\Server\server\.\openerp\osv\orm.py", line 486, in __getattr__
  File "D:\Program Files\OpenERP 7.0-20131109-002558\Server\server\.\openerp\osv\orm.py", line 401, in __getitem__
  File "D:\Program Files\OpenERP 7.0-20131109-002558\Server\server\openerp\addons\base\res\res_users.py", line 810, in read
  File "D:\Program Files\OpenERP 7.0-20131109-002558\Server\server\openerp\addons\base\res\res_users.py", line 272, in read
  File "D:\Program Files\OpenERP 7.0-20131109-002558\Server\server\.\openerp\osv\orm.py", line 3612, in read
  File "D:\Program Files\OpenERP 7.0-20131109-002558\Server\server\.\openerp\osv\orm.py", line 3664, in _read_flat
  File "D:\Program Files\OpenERP 7.0-20131109-002558\Server\server\.\openerp\sql_db.py", line 161, in wrapper
  File "D:\Program Files\OpenERP 7.0-20131109-002558\Server\server\.\openerp\sql_db.py", line 226, in execute
ProgrammingError: column res_users.fieldname_id does not exist
LINE 1: ...",res_users."gmail_password",res_users."alias_id",res_users....
                                                             ^
2014-04-08 09:40:41,312 2544 INFO cvw_new werkzeug: 127.0.0.1 - - [08/Apr/2014 09:40:41] "POST /web/session/get_session_info HTTP/1.1" 200 -
Note: using inherit able to add column in other table
