kernel: add list_nulls.h, rculist_nulls.h from upstream
tree03c2fd70ab12515ea0abd7a1a39b3fbfa3ac7f3c
-rwxr-xr-x 48392 CHANGELOG
-rw-r--r-- 593 COPYING
-rwxr-xr-x 885 README.TXT
-rwxr-xr-x 648 VERSION
-rwxr-xr-x 70 make.sh
-rwxr-xr-x 308 make_all.sh
drwxr-xr-x - release
drwxr-xr-x - toolchain
drwxr-xr-x - tools