patch 8.0.1371: Shift-Insert doesn't always work in MS-Windows console

Problem:    Shift-Insert doesn't always work in MS-Windows console.
Solution:   Handle K_NUL differently if the second character is more than one
            byte. (Yasuhiro Matsumoto, closes #2381)

Author: brammool

src/os_win32.c

@@ -1816,9 +1816,18 @@ mch_inchar(
 		    typeahead[typeaheadlen] = c;
 		if (ch2 != NUL)
 		{
-		    typeahead[typeaheadlen + n] = 3;
-		    typeahead[typeaheadlen + n + 1] = (char_u)ch2;
-		    n += 2;
+		    if (c == K_NUL && (ch2 & 0xff00) != 0)
+		    {
+			/* fAnsiKey with modifier keys */
+			typeahead[typeaheadlen + n] = (char_u)ch2;
+			n++;
+		    }
+		    else
+		    {
+			typeahead[typeaheadlen + n] = 3;
+			typeahead[typeaheadlen + n + 1] = (char_u)ch2;
+			n += 2;
+		    }
 		}
 
 		/* Use the ALT key to set the 8th bit of the character

src/version.c

@@ -771,6 +771,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1371,
 /**/
     1370,
 /**/