perf hists: Fix compilation when NO_NEWT_SUPPORT is set

This patch, relative to tip/master, makes perf compile when
NO_NEWT_SUPPORT is set.  It also fixes the line formatting to fit 80
columns.

Please test with NO_NEWT.

Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20111012120328.GA1619@quad


Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>