ticket:8464: Add relative date formatting.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk/source@34686 251d0590-4201-4cf1-90de-194747b24ca1
ticket:8464: Try to fix broken build.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk/source@34687 251d0590-4201-4cf1-90de-194747b24ca1
ticket:8464: Try to fix broken build.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk/source@34689 251d0590-4201-4cf1-90de-194747b24ca1
ticket:8464: Attempt to fix windows broken build.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk/source@34690 251d0590-4201-4cf1-90de-194747b24ca1
ticket:8464: Remove dependency between LRUCache and mutex.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk/source@34691 251d0590-4201-4cf1-90de-194747b24ca1
ticket:8464: Fix broken build.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk/source@34692 251d0590-4201-4cf1-90de-194747b24ca1