SUMMARY:
This is a backport of version 2.10 (experimental ov518 color support, etc...). 

ov511.c:
- Add experimental OV518 color support. Doesn't work reliably yet, and must
  use ov518_color parameter to enable it. See ov511.txt for more info.
- New camera: Ezonics EZCam II
- Add usb device and bus number (for 2.4) and topology (for 2.5) to /proc
  info file and syslog
- Increase clock rate, and disable frame drop. This used to cause problems,
  but it works fine now and doubles the frame rate (at minimum).
- Fix some typos in comments
- OV6630AE/AF were being incorrectly reported as OV6630 in syslog
- Minor fix to OV6630 register 0x14 setting
- Clean up the OV6630 register settings

ov511.h:
- Add stuff for usb_make_path() support (2.5 only)

ov511.txt:
- Document the ov518_color parameter