Fix paths in my previous cp/ChangeLog entries (r206368-r206371) and fix layout in cpp1y PR testcases as pointed out by Jakub.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206403 138bc75d-0d04-0410-961f-82ee72b054a4
Update gcc/testsuite/ChangeLog with r206403's cosmetic changes.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206404 138bc75d-0d04-0410-961f-82ee72b054a4