Merge branch 'perf/core' into perf/urgent

tools/perf/Makefile

tools/perf/builtin-annotate.c

tools/perf/util/debug.c

tools/perf/util/debug.h

tools/perf/util/hist.c

tools/perf/util/hist.h

tools/perf/util/pstack.h

tools/perf/util/symbol.c

tools/perf/util/ui/browser.c

tools/perf/util/ui/browser.h

tools/perf/util/ui/browsers/annotate.c

tools/perf/util/ui/browsers/hists.c

tools/perf/util/ui/browsers/map.c

tools/perf/util/ui/browsers/map.h

tools/perf/util/ui/helpline.c

tools/perf/util/ui/helpline.h

tools/perf/util/ui/libslang.h

tools/perf/util/ui/progress.c

tools/perf/util/ui/progress.h

tools/perf/util/ui/setup.c