Updating devel/p5-Date-Calc from 5.8 to 6.0

Upstream changesi (since 5.8):
Version 6.0  07.10.2009
+  Added new functions "N_Delta_YMDHMS()", "Add_N_Delta_YMD()"
    and "Add_N_Delta_YMDHMS()" to "Date::Calc"
+  Added more tests to "t/f037.t" for these new functions
+  Added a new "normalized" mode to "Date::Calc::Object" which
    uses the new functions "N_Delta_YMD()", "N_Delta_YMDHMS()",
    "Add_N_Delta_YMD()" and "Add_N_Delta_YMDHMS()"
+  Added test scripts "t/m012.t" and "t/m013.t" for this new mode
+  The language can now be set individually for each function
    in "Date::Calc" that requires it (through a new optional
    parameter; the default continues to be a global setting
    for backward compatibility); the affected functions are:
    "Decode_Month()", "Decode_Day_of_Week()", "Compressed_to_Text()",
    "Date_to_Text()", "Date_to_Text_Long()", "Calendar()",
    "Month_to_Text()", "Day_of_Week_to_Text()", "Day_of_Week_Abbreviation()",
    "Decode_Date_EU()", "Decode_Date_US()", "Decode_Date_EU2()",
    "Decode_Date_US2()", "Parse_Date()".
+  BEWARE that the interface of "DateCalc.c" has changed!
+  Module "Date::Calc::Object" has been changed similarly
+  Module "Date::Calendar::Year" has also been adapted accordingly
+  Many test scripts have been changed to reflect the modifications
    in "Date::Calc", "Date::Calc::Object" and "Date::Calendar::Year"
    and more test cases have been added
+  Updated the documentation to reflect all changes
+  Updated version numbers of dependencies in "t/f000.t"

(sno)