perf tools: rename HEADER_TRACE_INFO to HEADER_TRACING_DATA

perf tools: rename HEADER_TRACE_INFO to HEADER_TRACING_DATA

To match the PERF_RECORD_HEADER_TRACING_DATA record type.

This is the same info as the one used for pipe mode whereas the other
one is for regular file output. This will help in the later patch to add
meta-data infos in pipe mode.

Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1337081295-10303-4-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>