perf/core improvements and fixes:

User visible:

- Tooling support for TopDown counters, recently added to the kernel (Andi Kleen)

- Show call graphs in 'perf script' when 1st event doesn't have it but some other has (He Kuang)

- Fix terminal cleanup when handling invalid .perfconfig files in 'perf top' (Taeung Song)

Build fixes:

- Respect CROSS_COMPILE for the linker in libapi (Lucas Stach)

Infrastructure:

- Fix perf_evlist__alloc_mmap() failure path (Wang Nan)

- Provide way to extract integer value from format_field (Arnaldo Carvalho de Melo)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
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=60TB
-----END PGP SIGNATURE-----