vim-patch:8.0.0721: :argedit can only have one argument

Problem:    :argedit can only have one argument.
Solution:   Allow for multiple arguments. (Christian Brabandt)
90305c66a8

src/nvim/ex_cmds.lua

@@ -108,7 +108,7 @@ return {
   },
   {
     command='argedit',
-    flags=bit.bor(BANG, NEEDARG, RANGE, NOTADR, ZEROR, FILE1, EDITCMD, ARGOPT, TRLBAR),
+    flags=bit.bor(BANG, NEEDARG, RANGE, NOTADR, ZEROR, FILES, EDITCMD, ARGOPT, TRLBAR),
     addr_type=ADDR_ARGUMENTS,
     func='ex_argedit',
   },