refs #17260, fix format of source maps due to spec change
Update the CSS optimizer to end a URL path at a hash as well as a question mark

Fixes #17243
Add new build option useSourceMaps.

True (default) results in source map generation, when supported
by the optimizer. False results in no source maps.

Fixes #17425.
refs #17719, add package.json for util package (called it dojo-util to have a unique name on npm
Run clean before building cldr as this is required. Fixes #16166.
Fix for bug #17456 (Multiple resources are destined for same filename
errors)