ticket:10624 Swat clang compile warnings. More fixes to come.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@34854 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10624 Compiler warning cleanups, continued.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@34855 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10583: Fixed a minor problem in illegal lead byte handling in the UTF-8 charset recognizer.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@34856 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10624 Fix windows build error introduced with earlier compile warning fix.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@34859 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10624 Swat clang compile warnings.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@34861 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10624 Swat clang compile warnings.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@34863 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10499: genrb use explicit UnicodeString constructors

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@34867 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10499 fix compile error with gcc.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@34872 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10561: ZoneMeta methods must check for bogus input strings

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@34873 251d0590-4201-4cf1-90de-194747b24ca1