ticket:10398: merge of r34476 - comment about volatile

git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/maint@34477 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10398: regen APIChangeReport.html

git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/maint@34478 251d0590-4201-4cf1-90de-194747b24ca1