* [tr064] Normalize numbers in phone book entries.
Phone book numbers and numbers to be looked up might be formatted
differently (real world example: '+49 (12345) 67890' vs. '01234567890'
(where the former is phonebook formatting and the latter is the format
transmitted by the avmfritz binding). Make sure such formatting
differences do not cause lookup mismatches.
Signed-off-by: Danny Baumann <dannybaumann@web.de>
