ticket:10977: remove stray #if DEBUG from toolutil/ucbuf.c


git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@35947 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10977: remove stray #if DEBUG from a few more files


git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@35948 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10890: fix string handling in icuplug


git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@35949 251d0590-4201-4cf1-90de-194747b24ca1