Find change log file and add entries from recent version control logs.
Normally, find log entries for all registered files in the default
directory.
With prefix arg of C-u, only find log entries for the current buffer's file.
With any numeric prefix arg, find log entries for all currently visited
files that are under version control. This puts all the entries in the
log for the default directory, which may not be appropriate.
From a program, any ARGS are assumed to be filenames for which
log entries should be gathered.
(fn &rest ARGS)