kern/120304: [netgraph] [patch] netgraph source assumes 32-bit timeval on AMD64

[Eugene Grosbein]

Hi!

This is still the problem for 9.1-PRERELEASE: ng_source is unusable for 64bit systems.
The patch really helps and fixes the problem for 64bit (and breaks for 32bit :-)

Perhaps, it may be improved with some #ifdef's

Eugene Grosbein