Update build script to create FPWD for TTWG.

This also requires updating respec so we can use the latest process
document.
Rename config files so that they're listed together

Also unindent them.
Split static CG/WG spec generation into build.sh
Merge pull request #1 from foolip/workingDraft

Split static CG/WG spec generation into build.sh
Update to latest respec.
Merge pull request #121 from silviapfeiffer/workingDraft

Update build script to create FPWD for TTWG.