another directory rename: failstar -> fail

"failstar" sounds like a name for a cruise liner from the 80s.  As "*" isn't a
desirable part of directory names, just name the whole thing "fail/", the core
parts being stored in "fail/core/".

Additionally fixing two build system dependency issues:
 - missing jobserver -> protomessages dependency
 - broken bochs -> fail dependency (add_custom_target DEPENDS only allows plain
   file dependencies ... cmake for the win)


git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@956 8c4709b5-6ec9-48aa-a5cd-a96041d1645a

scripts/multiple-clients.sh

@@ -0,0 +1,59 @@
+#!/bin/bash
+#
+# multiple-clients.sh [num_clients]
+# Starts multiple client.sh instances in a new tmux session.  The number of
+# clients defaults to #CPUs+1.
+#
+# Prerequisites:
+#  - client.sh and all necessary FailBochs ingredients (bochs binary, bochsrc,
+#    BIOS/VGA-BIOS, boot image, possibly a saved state) in the current
+#    directory
+#  - tmux installed somewhere in $PATH
+#  - possibly missing dynamic libraries in ~/bochslibs (e.g., for running a
+#    i386 bochs binary in an x86_64 environment)
+#
+
+set -e
+LIBDIR=~/bochslibs
+
+# cleanup earlier failures
+# (FIXME: you probably don't want this on your local machine!)
+killall -q bochs || true
+
+# On many machines, ~ is mounted via NFS.  To avoid the (severe) performance
+# penalty, copy all experiment-related stuff to /tmp.
+TMP=/tmp/fail.$(id -nu)
+mkdir -p $TMP
+rsync -a --delete * $TMP/
+if [ -d $LIBDIR ]
+then
+	rsync -a --delete $LIBDIR $TMP/
+fi
+cd $TMP
+
+# tmux, please shut up.
+TMUX='tmux -q'
+COMMAND=./client.sh
+SESSION=failbochs.$$
+
+# Calculate number of clients from #processors.
+PROCESSORS=$(fgrep processor /proc/cpuinfo|wc -l)
+if [ -z "$1" ]
+then
+	NWIN=$(($PROCESSORS+1))
+	#NWIN=$(($NWIN*2))
+else
+	NWIN=$1
+fi
+
+# Run $NWIN clients in a new tmux session.
+$TMUX new-session -s $SESSION -d "$COMMAND"
+for i in $(seq 1 $(($NWIN-1)))
+do
+	$TMUX new-session -t $SESSION -d \; split-window -h "$COMMAND"
+	$TMUX new-session -t $SESSION -d \; select-layout tiled
+done
+
+# Some diagnostics for the operator.
+echo "$(uname -n) ($PROCESSORS CPUs @ $(fgrep MHz /proc/cpuinfo|head -n1|awk '{print $(NF)}') MHz): started $NWIN clients"
+#$TMUX attach -t $SESSION