ICU-22270 Fix hex number formatting in icuexportdata

ICU-22256 Add helper code to dump Bidi_Mirroring_Glyph data to file

See #2391

ICU-22220: tag icu 73 @7ed7d42f58... for use in CLDR

ICU-22220: tag icu 73 @ed011f2e31... for use in CLDR

ICU-22270 expose uproperty values in icuexportdata

ICU-22270 Use hex for mask properties

ICU-22220: tag icu 73 @d469e628f3... for use in CLDR

ICU-22251 Move sprintf to snprintf.

See #2291

ICU-22220: tag icu 73 @0b3b83a809... for use in CLDR

ICU-22220: tag icu 73 @7e083e34fb... for use in CLDR