Follow emoji data files header change

The header of emoji data files in UCD, which were moved at 13.0.0, has
been changed since 14.0.0.  It seems to be the same as other files in
UCD.

tool/enc-unicode.rb

@@ -311,18 +311,19 @@ end
 def data_foreach(name, &block)
   fn = get_file(name)
   warn "Reading #{name}"
-  if /^emoji/ =~ name
-    sep = ""
-    pat = /^# #{Regexp.quote(File.basename(name))}.*^# Version: ([\d.]+)/m
-    type = :Emoji
-  else
-    sep = "\n"
-    pat = /^# #{File.basename(name).sub(/\./, '-([\\d.]+)\\.')}/
-    type = :Unicode
-  end
   File.open(fn, 'rb') do |f|
-    line = f.gets(sep)
-    unless version = line[pat, 1]
+    if /^emoji/ =~ name
+      line = f.gets("")
+      # Headers till Emoji 13
+      version = line[/^# #{Regexp.quote(File.basename(name))}.*^# Version: ([\d.]+)/m, 1]
+      type = :Emoji
+    else
+      # Headers since Emoji 14 or other Unicode data
+      line = f.gets("\n")
+      type = :Unicode
+    end
+    version ||= line[/^# #{File.basename(name).sub(/\./, '-([\\d.]+)\\.')}/, 1]
+    unless version
       raise ArgumentError, <<-ERROR
 #{name}: no #{type} version
 #{line.gsub(/^/, '> ')}
@@ -330,7 +331,7 @@ def data_foreach(name, &block)
     end
     if !(v = $versions[type])
       $versions[type] = version
-    elsif v != version
+    elsif v != version and "#{v}.0" != version
       raise ArgumentError, <<-ERROR
 #{name}: #{type} version mismatch: #{version} to #{v}
 #{line.gsub(/^/, '> ')}