patch 8.1.2003: MS-Windows: code page 65001 is not recognized

Problem:    MS-Windows: code page 65001 is not recognized.
Solution:   Use utf-8 for code page 65001. (Dan Thompson, closes #4902)

src/mbyte.c

@@ -4468,8 +4468,10 @@ enc_locale(void)
 
     if (acp == 1200)
 	STRCPY(buf, "ucs-2le");
-    else if (acp == 1252)	    /* cp1252 is used as latin1 */
+    else if (acp == 1252)	    // cp1252 is used as latin1
 	STRCPY(buf, "latin1");
+    else if (acp == 65001)
+	STRCPY(buf, "utf-8");
     else
 	sprintf(buf, "cp%ld", acp);
 

src/version.c

@@ -757,6 +757,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2003,
 /**/
     2002,
 /**/