schema correction fo alternative markup

[SVN r25206]

status/explicit-failures.xsd

@@ -58,7 +58,7 @@
         <xs:complexType>
             <xs:sequence>
                 <xs:element ref="test" minOccurs="0" maxOccurs="unbounded"/>
-                <xs:element ref="toolset" minOccurs="0"/>
+                <xs:element ref="toolset" minOccurs="0" maxOccurs="unbounded"/>
                 <xs:element ref="note" minOccurs="0"/>
             </xs:sequence>
         </xs:complexType>