Hello,

this patch updates the generic saa7146 driver.

Fixed problems:
- remove some #if LINUX_VERSION_CODE constructions
- sync with the interrupt handler changes in 2.5.69
- add a missing kfree() call which caused the kernel to
   leak 32kB of kmalloc()ed memory. iieek!
- fixed the capture code to handle cards that have swapped
   fields
- added and fixed some debug messages

I know that I introduced some new #if LINUX_VERSION_CODE constructions. 
This is bad and the linuxtv.org team knows it. But most users compile 
and test the drivers under 2.4 so we have to keep the driver to compile 
with 2.4, too.

Please review and apply.

Thanks
Michael Hunold.