#726 Fail docset builds on AsciiDoc check problems, but not the full build
- Best to review per commit.
- Introduced property to control build fail on AsciiDoc src problems. By default still 'false', to not fail build and report at end.
- Fail docset(s)/website builds on AsciiDoc source problems. Docset(s)/website builds fail immediately, while regular build still reports the problems at the end.
- Note that I tried to define a property in the Mojo, but configuration from the POM can't be overridden via a property specified on the command line. This is a known limitation of Maven. Using a custom property, as I've used here, is the only way.
Addresses #726