ticket:11074: update script metadata: Common=Zyyy -> Recommended, CldrBug:7827

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@36223 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10802: ifdef away unified cache diagnostic code that uses stdio.h.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@36225 251d0590-4201-4cf1-90de-194747b24ca1
ticket:11075: Remove dead code including LRUCache and tests and sharedptr.h

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@36226 251d0590-4201-4cf1-90de-194747b24ca1