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ICU-22721 Remove superfluous semicolons (-Wextra-semi).
ICU-12764 icu4c utf-8 source files, update Copyright notices.
ICU-22714 fix zos build, use OpenXL
ICU-22793 Clang-Tidy: google-readability-casting
ICU-12564 Update copyright notice in trunk
ICU-23151 Fixed pkgdata crash with Clang-CL
ICU-11609 add svn:eol-style property to vcxproj files.
ICU-22621 Clang-Tidy: modernize-use-nullptr
ICU-10879 Split out OBJECTS from Makefiles into separate files