Log Message:
Update to 6.3:

Version 6.3 - June 9 2014

[CHANGES]
New facilities:
o htags-server: A private HTTP/CGI web server for a hyper-text
  generated by htags(1).
o gtags.conf: New project based configuration mechanism.
  You can make a configuration file for each project.
  This is Leo Liu's idea.
o gtags, htags: New environment variables which have default
  options for each command: GTAGS_OPTIONS, HTAGS_OPTIONS
o global: Added support of GREP_COLORS environment variable.
o global: Added new options:
  -F (--first-match), -M (--match-case), -E (--extended-regexp)

[DEPRECATED FEATURES]
The following features of htags(1) are now deprecated.
They will be removed in the future.
o The -c (--compact) option.
o The --system-cgi option.
o The --overwrite-key option.
o The -x (--xhtml[=version]) option.
  All files will be 1.0.
o The following configuration variables:
  colorize-warned-line (substitute: --colorize-warned-line)
  gzipped_suffix
  htags_options (substitute: HTAGS_OPTIONS)
  ncol (substitute: -n, --line-number [n])
  normal_suffix (will be always '.html')
  no_order_list (substitute: --no-order-list)
  script_alias
  tabs (substitute: --tabs n)
  xhtml_version (will be always 1.0)

[FIXED BUGS]
o global: The highlight of symbols in library paths does not
  work. Now it works.
o htags: Htags with the --suggest option didn't find GTAGS
  in the obj directories. Now it works.