SYNC TO KERNEL:
- Changed "urb_t" to "struct urb", in preparation for 2.5.3
- Support for 2.5.2 usb module locking

NEW FEATURES:
- New camera: Webeye 2000B

BUG FIXES:
- Things that should only be done when building outside the kernel are protected
  by #if defined(OUTSIDE_KERNEL)
- Control transfer buffer is allocated with kmalloc() instead of on the stack
- Added check for null pointers to mode_init_regs()
- Fixed more casts from video_device to usb_ov511
- Don't fail if compression is on but no decompressor loaded, if dumppix
- OV518+ with OV7620 should have been limited to 320x240

INTERNAL CHANGES:
- Renamed many functions from ov511_* to ov51x_*
- Instances of usb_ov511 renamed from ov511 to ov throughout
- Register and I2C I/O functions have much shorter names now
- OV518 multi-byte write function takes a u32 rather than an array.
- Most functions that took a usb_device take a usb_ov511 now
- ov511->bclass replaces ov511->bridge where appropriate
- Simplified ov51x_alloc()
- V4L1-specific functions include "v4l1" in their name
- Renamed "ov511_template" to the more accurate "vdev_template"
- ov51x_set_slave_ids() only takes write slave id now
- ov511.h: Register mnemonics are actually short enough to be usable now
- ov511.h: Removed FRAME_SIZE_PER_DESC
- ov511.h: added stuff for dynamically-allocated control transfer buffer