refactor
	new file:   common/common.h
	new file:   common/cstringUtil.c
	new file:   common/cstringUtil.h
	new file:   common/curlCmdUtil.c
	new file:   common/curlCmdUtil.h
	new file:   common/curlFtpUtil.cpp
	new file:   common/curlFtpUtil.h
	new file:   cutils/filesystem.c
	new file:   cutils/filesystemUtil.h
	new file:   cutils/hashUtil.c
	new file:   cutils/hashUtil.h
	new file:   cutils/timeUtil.c
	new file:   cutils/timeUtil.h
	modified:   cUtils.pro
	modified:   cUtils.pro.user
	deleted:    common/common.h
	deleted:    common/cstringUtil.c
	deleted:    common/cstringUtil.h
	deleted:    common/curlCmdUtil.c
	deleted:    common/curlCmdUtil.h
	deleted:    common/curlFtpUtil.cpp
	deleted:    common/curlFtpUtil.h
	modified:   cutils/common.h
	modified:   cutils/cstringUtil.c
	modified:   cutils/cstringUtil.h
	modified:   cutils/curlCmdUtil.c
	modified:   cutils/curlCmdUtil.h
	modified:   cutils/curlFtpUtil.c
	modified:   cutils/curlFtpUtil.h
	modified:   cutils/filesystem.c
	modified:   cutils/filesystemUtil.h
	modified:   cutils/hashUtil.c
	modified:   cutils/hashUtil.h
	modified:   cutils/timeUtil.c
	modified:   cutils/timeUtil.h
	modified:   main.c