implement something I think useful~

new file:   cpanfile
	modified:   lib/Array.pm
	new file:   lib/File.pm
	new file:   lib/HTTP/Client.pm
	new file:   lib/HTTP/DOM.pm
	modified:   lib/Hashtable.pm
	new file:   lib/Log.pm
	new file:   lib/SHashtable.pm
	new file:   lib/System.pm
	new file:   lib/Time.pm
	renamed:    script/parse_excel.pm -> script/parse_excel.pl
	new file:   t/file-read.t
	new file:   t/file-stat.t
	modified:   t/hashtable.t
	new file:   t/http-client.t
	new file:   t/http-dom.t
	new file:   t/log.t
	new file:   t/log.txt
	new file:   t/shashtable.t
	new file:   t/system.t
	new file:   t/time.t