ticket:7912: fix breakage

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk/source@33853 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10088 Fix incorrect API doc for uregex_setStackLimit().

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk/source@33854 251d0590-4201-4cf1-90de-194747b24ca1