task/ta-npe-mapper-08 -- get list of WebMethods files to process

nparcel/b2cconfig.py
nparcel/conf/nparceld.conf
nparcel/tests/test_b2cconfig.py
* change _pe_in_file_format string

nparcel/utils/files.py
nparcel/loaderdaemon.py
* factored out the files() method from nparcel/loaderdaemon.py
  to here as new method, get_directory_files()

nparcel/mapperdaemon.py
* new method get_files() that identifies GIS-special WebMethod
  files that are to be processed