ticket:8892: merge into 4.8.x r33133 for ticket:9912 : fix default timezone detection on Solaris


git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/maint@33203 251d0590-4201-4cf1-90de-194747b24ca1
ticket:9358: merge into 49.x r33133 for ticket:9912 : fix default timezone detection on Solaris


git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/maint@33204 251d0590-4201-4cf1-90de-194747b24ca1
ticket:9651: merge into 50.x r33133 for ticket:9912 : fix default timezone detection on Solaris


git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/maint@33205 251d0590-4201-4cf1-90de-194747b24ca1