ticket:8464: Completed C++ test for relative dates.

git-svn-id: http://source.icu-project.org/repos/icu/icu@34666 251d0590-4201-4cf1-90de-194747b24ca1
ticket:9101: re-add ucol_equals() but only in internal header; fix TestCompressOverlap; remove TestImplicitGeneration (implicits are done very differently now); new intltest TESTCASE_AUTO_CLASS & TESTCASE_AUTO_CREATE_CLASS

git-svn-id: http://source.icu-project.org/repos/icu/icu@34667 251d0590-4201-4cf1-90de-194747b24ca1