make tree rcS files reflect what we've been actually using in /dist.

also, update all the rcS files so that they are in sync with the new linux-dist build system.

configs/boot/devtime.rcS:
configs/boot/iscsi-client.rcS:
configs/boot/iscsi-server.rcS:
configs/boot/micro_memlat.rcS:
configs/boot/micro_stream.rcS:
configs/boot/micro_tlblat.rcS:
configs/boot/nat-netperf-maerts-client.rcS:
configs/boot/nat-netperf-server.rcS:
configs/boot/nat-netperf-stream-client.rcS:
configs/boot/nat-spec-surge-client.rcS:
configs/boot/nat-spec-surge-server.rcS:
configs/boot/natbox-netperf.rcS:
configs/boot/natbox-spec-surge.rcS:
configs/boot/netperf-rr.rcS:
configs/boot/netperf-server.rcS:
configs/boot/netperf-stream-client.rcS:
configs/boot/netperf-stream-nt-client.rcS:
configs/boot/nfs-client-nhfsstone.rcS:
configs/boot/nfs-client-tcp-smallb.rcS:
configs/boot/nfs-client-tcp.rcS:
configs/boot/nfs-client.rcS:
configs/boot/nfs-server-nhfsstone.rcS:
configs/boot/nfs-server.rcS:
configs/boot/ping-client.rcS:
configs/boot/ping-server.rcS:
configs/boot/spec-surge-client.rcS:
configs/boot/spec-surge-server.rcS:
configs/boot/surge-client.rcS:
configs/boot/surge-server.rcS:
make tree rcS files reflect what we've been actually using in /dist.

Clean up the newly updated iscsi-client script

configs/boot/iscsi-client.rcS:
Clean up the newly updated iscsi-client script.
Reduce the writeback period so writes occur more frequently.

new rcS file for open-iscsi rather than the old linux-iscsi

various changes to the boot scripts

configs/boot/iscsi-client.rcS:
configs/boot/nfs-client-dbench.rcS:
don't use the /proc/m5 stuff, use the m5 binary
configs/boot/nfs-client-nhfsstone.rcS:
set up checkpoints
change nhfsstone configuration
configs/boot/nfs-client.rcS:
use more memory
configs/boot/nfs-server.rcS:
change the writeback frequency
load a larger simulated disk image.
create more nfsd threads

Add NFS-dbench, and iscsi dbench benchmarks