Prepare for elfutils 0.170

[Jose E. Marchesi]

    > It has been 3 months again so time for another update.
    > I just pushed the version bump update and would like to do a release
    > tomorrow unless some showstoppers are found.
    
    I tested current git master on Debian 8 amd64, Debian 9 amd64, Fedora
    rawhide x86_64, ppc64le, aarch64, ppc64, i686, s390x, armv7hl, RHEL6
    ppc, s390, x86_64, ppc64, i686, s390x and RHEL7 ppc, x86_64, s390,
    aarch64, ppc64le, ppc64, i686, s390x all with zero FAIL.

Tried to build latest master in sparc64:

../../src/readelf.c:3805:7: error: ‘DWARF_ALL_KNOWN_DW_DEFAULTED’
 undeclared (first use in this function); did you mean ‘DWARF_ALL_KNOWN_DW_ATE’?

Seems like a typo in readelf.c:dwarf_defaulted_string:

#define DWARF_ONE_KNOWN_DW_DEFAULTED(NAME, CODE) [CODE] = #NAME,
      DWARF_ALL_KNOWN_DW_DEFAULTED
#undef DWARF_ONE_KNOWN_DW_DEFAULTED