ticket:8464: Remove references to SharedPtr from public header file by subclassing Markus S. SharedObject class.

git-svn-id: http://source.icu-project.org/repos/icu/icu@34824 251d0590-4201-4cf1-90de-194747b24ca1
ticket:8464: Modify vcxproj files to add common/sharedobject.h and sharedobject.cpp

git-svn-id: http://source.icu-project.org/repos/icu/icu@34825 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10434: tzdata2013i to ICU4C, including metazone mapping updates (cldrbug:6893), windows tz mapping updates (cldrbug:6894), make file changes (tzdata2013i removed tz files - solar87/88/89) and a test case update.

git-svn-id: http://source.icu-project.org/repos/icu/icu@34828 251d0590-4201-4cf1-90de-194747b24ca1