Changelog:
==========
- Refactor SVCB to avoid internal use of generic keyNN.
- DELEG documentation and code improvement.
- Fix rt.cpan.org: bug in resolver base selection on non-Unix/Linux platforms
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>