Log Message:
Update p5-Date-Calc to 5.3 (old version no longer on CPAN)

 +  Simplified the error message handlers in "Calc.xs".
 +  Changed the Polish profiles from ISO-Latin-2 to ISO-Latin-1.
 +  Fixed the broken tests in "t/f034.t" and "t/m006.t".
 +  Synchronized "Carp::Clan" and "ToolBox.h" with \ 
"Bit::Vector" 6.2.
 +  Integrated modifications needed for MacOS / MacPerl.
 +  Added new method "normalize()" (Date::Calc::Object).
 +  Added a new test script "t/m011.t" for "normalize()".
 +  Added a calendar profile for Mexico (Date::Calendar::Profiles).
 +  Little additions to and corrections of the documentation (Date::Calc).
 +  Added Polish (Date::Calc) and a calendar profile for Poland.
 +  Added Hungarian (Date::Calc).
 +  Added some more commemorative days to the profile of Brazil.