- Added an extra read cycle at the end of ov511_i2c_read(). This fixes problems
  with writes and reads failing.
- Removed ov511_parse_data()
- Added ov511_move_data()
- Removed ov511_compress_isochronous()
- ov511_isoc_irq() changed significantly
- Test pattern code added to ov511_init_isoc()
- ov511.h: OV511_RESET_I2O renamed to OV511_RESET_I2C
- ov511.h: OV511_I2C_CLOCK_PRESCALER added
- ov511.h: 'curpix' added to ov511_frame
- Makefile: duplicate code removed