ticket:9101: change test of ucol_openBinary(base=NULL) assuming we want to forbid that again

git-svn-id: http://source.icu-project.org/repos/icu/icu@34614 251d0590-4201-4cf1-90de-194747b24ca1
ticket:9101: minor fixes for ucol_getRules() & ucol_getLocale() and some C tests

git-svn-id: http://source.icu-project.org/repos/icu/icu@34615 251d0590-4201-4cf1-90de-194747b24ca1