[FIX] base: set correct Sudanese currency

Since July 1, 2007, the Sudanese pound is the only legal tender.

Closes #13802

odoo/addons/base/res/res_country_data.xml

@@ -1384,7 +1384,7 @@
             <field name="name">Sudan</field>
             <field name="code">sd</field>
             <field file="base/static/img/country_flags/sd.png" name="image" type="base64" />
-            <field name="currency_id" ref="SDD" />
+            <field name="currency_id" ref="SDG" />
             <field eval="249" name="phone_code" />
         </record>
         <record id="se" model="res.country">

odoo/addons/base/res/res_currency_data.xml

@@ -1016,6 +1016,7 @@
             <field name="active" eval="False"/>
         </record>
 
+        <!-- no longer in use since 2007 -->
         <record id="SDD" model="res.currency">
             <field name="name">SDD</field>
             <field name="symbol">£Sd</field>
@@ -1023,6 +1024,13 @@
             <field name="active" eval="False"/>
         </record>
 
+        <record id="SDG" model="res.currency">
+            <field name="name">SDG</field>
+            <field name="symbol">ج.س.</field>
+            <field name="rounding">0.01</field>
+            <field name="active" eval="False"/>
+        </record>
+
         <record id="LKR" model="res.currency">
             <field name="name">LKR</field>
             <field name="symbol">Rs</field>

odoo/addons/base/res/res_currency_demo.xml

@@ -877,6 +877,12 @@
             <field name="rate">544.44</field>
         </record>
 
+        <record forcecreate="0" id="rateSDG" model="res.currency.rate">
+            <field name="currency_id" ref="SDG" />
+            <field name="name">2010-01-01</field>
+            <field name="rate">3.1999</field>
+        </record>
+
         <record forcecreate="0" id="rateLKR" model="res.currency.rate">
             <field name="currency_id" ref="LKR" />
             <field name="name">2010-01-01</field>