Log Message:
libcares: updated to 1.15.0

c-ares version 1.15.0:

Changes:
- Add ares_init_options() configurability for path to resolv.conf file
- Ability to exclude building of tools (adig, ahost, acountry) in CMake
- Android: Support for domain search suffix
- Report ARES_ENOTFOUND for .onion domain names as per RFC7686

Bug fixes:
- AIX build fix for trying to include both nameser_compat.h and onameser_compat.h
- Windows: Improve DNS suffixes extracting from WinNT registry
- Fix modern GCC warnings
- Apply the IPv6 server blacklist to all nameserver sources, not just Windows
- Fix warnings emitted by MSVC when using -W4
- Prevent changing name servers while queries are outstanding
- Harden and rationalize c-ares timeout computation
- Distribute ares_android.h
- ares_set_servers_csv() on failure should not leave channel in a bad state
- Add missing docs to distribution