Log Message:
Updated libcares to 1.13.0.

 c-ares version 1.13.0 - June 20 2017

Changes:

    cmake build system support added
    Add virtual function set for socket IO: ares_set_socket_functions

Bug fixes:

    CVE-2017-1000381: c-ares NAPTR parser out of bounds access
    macos: do not set HAVE_CLOCK_GETTIME_MONOTONIC
    test: check ares_create_query with too-long name
    dist: add ares_library_initialized.* to the tarball
    fix build on OpenBSD
    dist: ship msvc_ver.inc too
    test: Add gTest/gMock files to SOURCES
    test: add fuzz entrypoint for ares_create_query()
    configure: clock_gettime workaround
    docs: convert INSTALL to MarkDown & tweak
    ares_process: fix return type of socket_create function (win32 warning)
    docs: fixed references to ares_set_local_ip4 and ares_set_local_ip6
    Windows DNS server sorting
    Use ares_socklen_t instead of socket_t
    ares_create_query: use ares_free not naked free
    msvc_ver.inc support most recent Visual Studio 2017
    acountry: Convert char from ISO-8859-1 to UTF-8
    ares_expand_name: limit number of indirections
    configure: do not check for ar if specified manually
    Added support for Windows DNS Suffix Search List
    ares.h: support compiling with QNX