ticket:10660: add back removed comments to fix missing sample code in ICU4C API doc

git-svn-id: http://source.icu-project.org/repos/icu/icu@35084 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10682: Fix clone, copy constructor, and assignment operator in RulesBasedNumberFormat.

git-svn-id: http://source.icu-project.org/repos/icu/icu@35085 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10461: Check in code to add NumberFormat::createSharedNumberFormat. Tests fail.

git-svn-id: http://source.icu-project.org/repos/icu/icu@35086 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10682: Fix memory leak in trunk.

git-svn-id: http://source.icu-project.org/repos/icu/icu@35087 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10461: Merge r3507 to r35087 from trunk.

git-svn-id: http://source.icu-project.org/repos/icu/icu@35088 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10461:shared_numfmt.h -> sharednumberformat.h

git-svn-id: http://source.icu-project.org/repos/icu/icu@35090 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10461:MeasureFormat to use NumberFormat::createSharedInstance.

git-svn-id: http://source.icu-project.org/repos/icu/icu@35091 251d0590-4201-4cf1-90de-194747b24ca1