Well, two patches in one... These patches will bring the PWC (Philips
Webcam) driver in both 2.4.20 and 2.5.51 up to version 8.10. Functionally,
the two branches are the same (about 70% of the code is shared), but the
differences in kernel architecture are too large to handle with a few
#ifdefs.

This patch fixes the following (this are only the differences between 8.9
and 8.10):

* Fixed ID for QuickCam Notebook pro
* Added GREALSIZE ioctl() call
* Fixed bug in case PWCX was not loaded and invalid size was set