[ICU-13552] tzdata2018b to ICU data trunk. Updated tzdata make file to build only one version of tz database at a time.

X-SVN-Rev: 40795
92 files changed
tree: 45f0d872f5e3ebef7f93713cdb5e631e30d910f8
  1. charset/
  2. meta/
  3. test/
  4. tzdata/
  5. .gitattributes
  6. .gitignore