ticket:10338: test & fix ucol_setReorderCodes({default})

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk/source@34319 251d0590-4201-4cf1-90de-194747b24ca1
ticket:9790: Don't use c99 for Solaris/GCC platform

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk/source@34320 251d0590-4201-4cf1-90de-194747b24ca1