- review class names

DNS mode:
- update README
- check negative caching
- check handling of network errors
- try to avoid libresolv.a
- replace "Unknown device" with "Device"

Capabilities with partial decoding:
- PCIe 2nd set of control/status registers (have spec)
- HyperTransport caps (have spec)

Capabilities with no decoding:
- VPD (have spec)
- CompactPCI hot-swap
- CompactPCI central resource control
- AGP3
- Secure device
- SATA HBA (have spec)
- Advanced features (have spec)
- Advanced Error Reporting (ext'd)
- Virtual Channel (ext'd)
- Power Budgeting (ext'd)
- Root Complex * (ext'd)
- Multi-Function Virtual Channel (ext'd)
- Root Bridge Control Block (ext'd)
- Access Controls (ext'd)

PCIIDS:
- delete old DB at SF