patch 9.0.0387: repeat <ScriptCmd> mapping doesn't use right script context

Problem:    repeating a <ScriptCmd> mapping does not use the right script
            context.
Solution:   When using a mapping put <SID>{sid}; in the redo buffer.
            (closes #11049)

src/version.c

@@ -703,6 +703,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    387,
 /**/
     386,
 /**/