The rename has new verbose option which will print which files
where renamed. Maintenance fixes includes long options, coding
style and freeing memory after usage.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
The number of files successfully renamed is calculated and stored in variable
ct, > but actually the variable is not used afterwards.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>