This updates DDC options processing to support:
* --options /path/to/analysis/options/file.yaml
* --enable-strict-call-checks
* --supermixin
* --no-implicit-casts
* --no-implicit-dynamic
As well as general refactoring and cleanup of DDC options processing
R=vsm@google.com
Review-Url: https://codereview.chromium.org/2598593003 .
Dan Rubel