Filter driver by Wu Bingzheng et al
Add 'getidle' CPU utilization measurement infrastructure
FPU context switching support by Evgeniy Ivanov.
any blocksize.
Specify types for integer MAX constants
previous commit premature and not part of FPU changes.
rtl8169 driver contributed by Jaswinder Singh Rajput.
Part of the FPU changes; forgot to add these files in FPU commit.
FPU: fix field names, compiler warning, long lines
A debug print with no meaning removed from VM.
Cleanup getsockopt and add SO_TYPE
Add realpath function
Fix line which was too long
Fixed tests to use the right path when run as root
Give test 43 root privileges to prevent errors when run as non-root
Cooments to warn not to use certains instructions

- gas2ack cannot handle all variants of some instructions. Until this issues is
  addressed, this patch places a big warning where appropriate. This code is not
  supposed to change frequently.
 - map in as much memory as is necessary in 4MB chunks to
   let boot processes run with segments
 - allow segment-only processes to fork() by copying them
   and giving them an identity page table
Intel Pro/1000 driver written by Niek Linnenbank.
Implementation of getrlimit and getdtablesize
Make VM fix up memory for kernel that crosses region boundaries
too.

Add a test to make this happen (triggers a vm panic before this commit).