Rather than create JSON objects for source locations and ranges, we instead stream them out directly. This allows us to elide duplicate information (without JSON field reordering causing an issue) like file names and line numbers, similar to the text dump. This also adds token length information when dumping the source location.
llvm-svn: 364226
This also details what filters, if any, were used to generate the test output. Updates all the current JSON testing files to include the automated note.
llvm-svn: 364055