ticket:8464: If LRUCache constructor fails, make sure destructor will still work.

git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/tkeep@34673 251d0590-4201-4cf1-90de-194747b24ca1
ticket:8464: RelativeDateFormatter tests now passing for C++

git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/tkeep@34674 251d0590-4201-4cf1-90de-194747b24ca1
ticket:8464: Add registerCleanup to RelativeDateTimeFormatter so that valgrind reports no memory leaks.

git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/tkeep@34676 251d0590-4201-4cf1-90de-194747b24ca1
ticket:8464: Fetch date time pattern from CLDR data.

git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/tkeep@34677 251d0590-4201-4cf1-90de-194747b24ca1
ticket:8464: Ensure that SharedPtr objects allocate their reference counters in the ICU heap.

git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/tkeep@34678 251d0590-4201-4cf1-90de-194747b24ca1
ticket:8464: Add IBM copyright header to new files.

git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/tkeep@34679 251d0590-4201-4cf1-90de-194747b24ca1
ticket:8464: unicode/lrucache.h -> lrucache.h

git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/tkeep@34680 251d0590-4201-4cf1-90de-194747b24ca1
ticket:8464: Update windows vcxproj files for relative dates.

git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/tkeep@34681 251d0590-4201-4cf1-90de-194747b24ca1