vim-patch:8.1.1748: :args output is not aligned (#10625)

Problem:    :args output is not aligned.
Solution:   Output a line break after the last item in a row.
74da39373c

vim-patch:8.1.1750: depending on the terminal width :version may miss a line break

Problem:    Depending on the terminal width :version may miss a line break.
Solution:   Add a line break when needed.
8a5c29aee9

vim-patch:8.1.1760: extra line break for wrapping output of :args

Problem:    Extra line break for wrapping output of :args.
Solution:   Avoid the extra line break. (Daniel Hahler, closes vim/vim#4737)
9800bfe0fc

src/nvim/version.c

@@ -2038,6 +2038,9 @@ static void version_msg(char *s)
 static void list_features(void)
 {
   list_in_columns((char_u **)features, -1, -1);
+  if (msg_col > 0) {
+    msg_putchar('\n');
+  }
   MSG_PUTS("See \":help feature-compile\"\n\n");
 }
 
@@ -2065,7 +2068,7 @@ void list_in_columns(char_u **items, int size, int current)
     // Not enough screen columns - show one per line
     for (i = 0; i < item_count; i++) {
       version_msg_wrap(items[i], i == current);
-      if (msg_col > 0) {
+      if (msg_col > 0 && i < item_count - 1) {
         msg_putchar('\n');
       }
     }
@@ -2100,6 +2103,14 @@ void list_in_columns(char_u **items, int size, int current)
           msg_putchar(' ');
         }
       }
+    } else {
+      // this row is out of items, thus at the end of the row
+      if (msg_col > 0) {
+        if (cur_row < nrow) {
+          msg_putchar('\n');
+        }
+        cur_row++;
+      }
     }
   }
 }