altered check_dir_file.rb so that it can check for the presence of a lis...

Altered so modules/auxilary/admin/smb/check_dir_file.rb so that it can take a list of files/dirs in the RPATH argument allowing for multiple files to be checked for across multiple hosts (basically tweaked so that I can use it to check for indicators of compromise more effectively).
Thanks, wchen-r7, have added that back.