* contrib/apollo/apollo.c
+ Added function sx_GetDateJulian()
+ Added function sx_GetVariant()
+ Added function sx_SetCentury()
+ Added function sx_SetDateFormat()
+ Added function sx_GetLogical()
* modified function sx_Replace()
Note: Replace a logical value with sx_Replace() does not work yet.
* contrib/apollo/test/apollo.prg
* Added added functions in the test application.
* enhanced code
* Added and changed defines
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