Update regpict (and dfn) to
1. move id attribute to the <g> related to each field (was on <text>)
2. don't create id attribute for unused bit fields
3. support value attribute on json
4. make svg_error more visible
5. support class attribute on json
6. adjust dfn.js to pick up field names from new locations
7. correct a few jslint issues
build
initial commit of nvidia stylesheet (color changes)