Summary: OV518+ is finally working (poorly, and only at 352x288, but it's a
start). Cameras with OV6620 sensors should work MUCH better now. Some minor
build problems are fixed as well.

SYNC TO KERNEL:
- Support the V4L API fixes in 2.5.8-pre1; drop support for older 2.5 kernels

NEW FEATURES:
- ov511.c: Improved OV6620 initial settings (Credit: Alexandre F.)
- Makefile: added install targets for 2.5 and 2.4.9-31+ RedHat kernels.

BUG FIXES:
- ov511.c: 
  - The packet number byte shouldn't be included the size programmed into the
    OV518+ ISO FIFO reg. The packet num gets sent anyway, so ov518_move_data()
    must ignore it. This makes the OV518+ finally work (barely).
  - Register 0x71 on the OV518 should be register 0x21 on the OV518+
  - OV518+ needs different CBR (multiple-byte register) settings
  - OV518+ needs different initial register settings
  - ov51x_init_isoc() should bomb out if usb_submit_urb() fails
  - MODULE_LICENSE should be enabled iff it is defined in the kernel source
  - #define __NO_VERSION__ was not necessary and caused compile problems in some
    cases

INTERNAL CHANGES:
- *.c: Simplified the module versioning "code"
- ov511.c:
  - Enable the new 2.5.5 memory managament code on 2.4.18+ (now that it provides
    vmalloc_to_page())
  - Most sensors thought to be OV7620AE were actually OV76BE. Changed the code
    to reflect this, and emit a warning if an OV7620AE is encountered.

DOCUMENTATION:
- README: Fixed some errors and added I2C and OV518-related info