Log Message:
libcdio: Update to 2.0.0

2017-12-31 version 2.0.0

This release bumps library version numbers and bumps the
major release number. We should have gone from 1.0.0 to 2.0.0
in the last release since there is an API incompatability.

In addition...

- Add NetBSD drive detection; correct drive detection in cd-info.c
  Patches from Onno van der Linden
- Fix some MinGW and Windows portability issues
- Remove some memory leaks in some tests
- Lint (a little) with clang static analyzer

There are some programs and bindings that will need to be updated
if you want to use them with this library. Specifically:

- Device::Cdio (2.0.0 or greater)
- vcdimager (2.0.0 or greater)
- pycdio (2.0.0 or greater)
- rbcdio (2.0.0 or greater)