Log Message:
Update p5-Algorithm-CheckDigits to 1.2.1.

Changes from previous:
----------------------
1.2.1 Sun Mar  3 22:51:45 CET 2013
	- changed list items in POD from 0, 1, ... to S<0>, S<1>, ...
	  according to a thread on the perl5 porters list
	  (www.nntp.perl.org/group/perl.perl5.porters/2013/02/msg199355.html)

	  David Wheeler: "Lists must start with 1. When it saw the 0, it
	  assumed it was a definition list, so the numbers after that
	  don't look right."

1.2.0 Fr 8. Jun 11:19:25 CEST 2012
	- reworked Algorithm::CheckDigits::MXX_001.pm, added ABA routing
	  numbers

1.1.2 Fr 8. Jun 09:22:35 CEST 2012
	- added '=encoding iso-8859-1' to M11_004.pm, M11_006.pm,
	  MBase_002.pm, MXX_003.pm, MXX_006.pm. This should prevent
	  failures in the processing of the POD that contain non-ASCII
	  characters.
	- corrected search and replacement lists in M10_011.pm