perf tools: Check if libtracevent has TEP_FIELD_IS_RELATIVE

Some distros have older versions of libtraceevent where
TEP_FIELD_IS_RELATIVE and its associated semantics are not present, so
we need to check if the version has it, it was introduced in
libtraceevent 1.5.0.

Reported-by: Athira Jajeev <[email protected]>
Tested-by: Athira Jajeev <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Nick Desaulniers <[email protected]>
Cc: Peter Zijlstra <[email protected]>,
Cc: Stephane Eranian <[email protected]>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

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