ICU-22781 Adding support for constant denominators (C++) #3358

Job	Run time
clang-valgrind-test	1m 29s
clang-valgrind-intltest (utility)	1s
clang-valgrind-intltest (normalize)	16s
clang-valgrind-intltest (collator)	59s
clang-valgrind-intltest (regex)	1s
clang-valgrind-intltest (format)	28s
clang-valgrind-intltest (translit)	1s
clang-valgrind-intltest (rbbi)	1s
clang-valgrind-intltest (rbnf)	1s
clang-valgrind-intltest (rbnfrt)	1s
clang-valgrind-intltest (icuserv)	42s
clang-valgrind-intltest (idna)	13s
clang-valgrind-intltest (convert)	1m 7s
clang-valgrind-intltest (rbnfp)	1s
clang-valgrind-intltest (csdet)	55s
clang-valgrind-intltest (spoof)	1s
clang-valgrind-intltest (bidi)	48s
	7m 5s

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