Update to xorm@v0.7.4 (#7596)

Signed-off-by: Tamal Saha <tamal@appscode.com>

vendor/github.com/go-xorm/xorm/engine.go

@@ -923,7 +923,16 @@ func (engine *Engine) mapType(v reflect.Value) (*core.Table, error) {
 					engine:     engine,
 				}
 
-				if strings.ToUpper(tags[0]) == "EXTENDS" {
+				if strings.HasPrefix(strings.ToUpper(tags[0]), "EXTENDS") {
+					pStart := strings.Index(tags[0], "(")
+					if pStart > -1 && strings.HasSuffix(tags[0], ")") {
+						var tagPrefix = strings.TrimFunc(tags[0][pStart+1:len(tags[0])-1], func(r rune) bool {
+							return r == '\'' || r == '"'
+						})
+
+						ctx.params = []string{tagPrefix}
+					}
+
 					if err := ExtendsTagHandler(&ctx); err != nil {
 						return nil, err
 					}