GENERAL CHANGES: (Summary: Small bug fixes and code cleanups)
- Added dump_regs module parameter; dumps i2c and OV511 registers.
- Added Mtekvision Zeca MV402 to camera list
- output_offset global variable replaced with frame->output_offset
- ov76xx_configure() renamed to ov7xxx_configure()
- OV6630 is really 352x288, not 640x480. My camera's manual says 640x480, but
  that is misleading bullshit.
- Off-by-one error in ov7xxx_configure() fixed (i == i2c_detect_tries changed
  i >= i2c_detect_tries). Be warned that this might break some Creative cameras
- Was not initializing the param_lock mutex. Fixed.
- Added ov51x_set_slave_ids() and ov51x_init_ov_sensor() functions to reduce
  code duplication.
- Added ov51x_set_default_params(), which sets the proper defaults for apps
  that do not use VIDIOCMCAPTURE ioctl
- Removed __devinit and __devexit modifiers from ov511_probe() and
  ov511_disconnect()
- Changed device_table from using named initializers to USB_DEVICE() macro
- ov511.h: Renamed OV7610_I2C_xxx_ID to OV7xxx_I2C_xxx_ID
- ov511.h: Added PIXELS_PER_SEG define
- ov511.h: Added output_offset field to ov511_frame
- ov511.txt: Added description of dump_regs parameter

OV518 CHANGES: (Summary: Many bugs fixed, but I still get no picture)
- Added ov518_reg_write_multi(). Writes multiple values to a single register.
- Added ov518_i2c_write() and ov518_i2c_read() functions. They are
  automatically called from ov511_i2c_write() and ov511_i2c_read().
- ov511_reset(), ov511_stop(), and ov511_restart() fixed to not set bit 0 of
  OV518/OV518Plus reset register. This was causing the camera to freeze up
  during initialization.
- ov511_set_packet_size() modified for OV518. Still does not work though.
- OV518 support added to ov511_led_control(). Seems to work well.
- mlist branched into mlist511 and mlist518.
- Added ov518_mode_init_regs(). A generic mode_init_regs() function was added,
  which calls the appropriate ov511/ov518 version.
- Hardcoded OV518 packet size to 640 for now, until proper frame rate setting
  algorithm can be implemented.
- Separate ov518_configure() function added.
- ov511.h: A few OV518-specific register defines added. Most are not yet known.
- ov511.h: Added mode_list_518 struct, and renamed mode_list to mode_list_511

COMPRESSION CHANGES: (Summary: Added foundation for future compression support)
- Added ov511_decompress() function, which is called from ov511_move_data()
  when a frame is done. Doesn't do anything (yet).
- When compression is enabled, data is moved to frame->rawdata now. This data
  does not get used for anything yet.
- Added ov511_upload_quan_tables(), for uploading the Y and UV quantization
  tables to the OV511's compression engine
- ov511.h: Added rawdata, compressed, and bytes_recvd fields to ov511_frame
- ov511.h: Added rawfbuf field to usb_ov511
- ov511.h: Added quantization, inverse discrete cosine, and zigzag tables