SUMMARY:
This is the first part of the conversion to a new I²C interface. Thanks to
Kyösti Mälkki for his help with this.

PER-FILE CHANGES:
- ov511.c:
  - Make path for tuner.h relative to current include dir
  - Remove dump_sensor option and related code, since this can be done from
    userspace now
  - New, smarter, I²C set_slave function (by Kyösti Mälkki)
  - Low-level I²C I/O functions broken down into separate 1 and 2 byte
    read/write functions. This is in preparation for the conversion to an SMBus-
    compatible I²C interface.
  - Remove obsolete i2c_[r|w]_slave() functions
  - Add separate i2c_algo structs for OV511 and OV518
  - Remove special I2C ioctls, since this can be done via /dev/i2c* now

- ov511.h:
  - Remove special I2C ioctls and associated ov511_i2c_struct
  - Add last_slave member to struct usb_ov511

- ov511.txt:
  - Remove documentation of dump_sensor

- saa7111-new.c
  - Conversion from I2C to SMBus interface
  - Fix off-by-one error in saa7111_write_block()