ticket:10468: Add check for if format is disabled

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@34701 251d0590-4201-4cf1-90de-194747b24ca1
ticket:8464: Add check for if formatting is disabled

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@34702 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10500: Add check for if formatting is disabled

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@34703 251d0590-4201-4cf1-90de-194747b24ca1
ticket:8464: Use UNICODE_STRING_SIMPLE instead of UnicodeString constructor

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@34707 251d0590-4201-4cf1-90de-194747b24ca1