ICU-12800 move icu maintenance branches into new hierarchy, for icu 50-58

X-SVN-Rev: 39501
7627 files changed
tree: f63319ceb3985579812b2c9a6e74be4433a4fadb
  1. icu4c/
  2. icu4j/
  3. .gitattributes
  4. .gitignore