Fix problem with test47: addition is not bitwise OR

:diffsplit command used to include some flag value twice. If I was using bitwise
OR it would be OK, but I had addition here. Changed to use bitwise OR.

scripts/transform_ex_cmds_defs.pl

@@ -1,70 +0,0 @@
-#!/usr/bin/perl
-
-use strict;
-use warnings;
-no utf8;
-
-my $srcfname = shift @ARGV;
-my $tgtfname = shift @ARGV;
-
-if ($srcfname eq "--help") {
-  print << "EOF";
-$0 path/to/ex_cmds_defs.h path/to/ex_cmds.lua
-
-  Translate Ex commands defines from old format to new one.
-EOF
-}
-
-my $flag_const = qr((?:[A-Z]+[A-Z1-9]));
-
-my $F;
-open $F, "<", "$srcfname"
-  or die "Failed to open $srcfname";
-
-my $T;
-open $T, ">", "$tgtfname"
-  or die "Failed to open $tgtfname";
-
-my ($enum_name, $cmd_name, $cmd_func);
-my ($flags);
-my $did_header = 0;
-while (<$F>) {
-  if (/^#define\s+($flag_const)\s+(.*)/) {
-    my $const_name = $1;
-    my $const_value = $2;
-    $const_value =~ s@/\*.*|//.*@@g;
-    $const_value =~ s/\s+//g;
-    $const_value =~ s/\|/+/g;
-    $const_value =~ s/(?<=\d)L//g;
-    print $T "local $const_name = $const_value\n";
-  } elsif (/^\{/../^\}/) {
-    if (/^\s*EX\(\s*CMD_(\w+)\s*,\s*"((?:\\.|[^"\\])+)"\s*,\s*(\w+)\s*,\s*$/) {
-      $enum_name = $1;
-      $cmd_name = $2;
-      $cmd_func = $3;
-    } elsif (defined $enum_name and /^\s*($flag_const(?:\|$flag_const)*|0)/) {
-      if (not $did_header) {
-        print $T "return {\n";
-        $did_header = 1;
-      }
-      $flags = $1;
-      $flags =~ s/\|/+/g;
-      local $\ = "\n";
-      print $T "  {";
-      print $T "    command='$cmd_name',";
-      print $T "    enum='CMD_$enum_name',"
-        if ($cmd_name ne $enum_name);
-      print $T "    flags=$flags,";
-      print $T "    func='$cmd_func',";
-      print $T "  },";
-      undef $enum_name;
-      undef $cmd_name;
-      undef $cmd_func;
-      undef $flags;
-    } else {
-      next;
-    }
-  }
-}
-
-print $T "}\n";