faultspaceplot as analysis tool

This change adds the faultspace-plotting scripts into FAIL*'s
tools/analysis/ folder and makes it CMake-configurable.

Change-Id: I9364a448a33853520629291721a6ed6d4e82eb32

tools/analysis/faultspaceplot/fsp.compact.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+set -e
+
+FIRST=vertical
+
+[ $# -lt 2 -o $# -gt 3 ] && echo "usage: $0 input.csv output.csv [vertical|horizontal]" >&2 && exit 1
+
+if [ -z $3 ]; then
+	FIRST=vertical
+else
+	FIRST=$3
+fi
+
+TMP1=$(mktemp)
+TMP2=$(mktemp)
+
+cp $1 $TMP1
+COUNT=$(wc -l <$TMP1)
+
+NEXT=$FIRST
+
+while true
+do
+	echo "at $COUNT, $NEXT ..."
+	fsp.compact-$NEXT.sh < $TMP1 > $TMP2
+
+	PREVCOUNT=$COUNT
+	COUNT=$(wc -l <$TMP2)
+
+	if (($COUNT >= $PREVCOUNT))
+	then
+		echo "no improvement (now $COUNT), stop."
+		cp $TMP1 $2
+		break
+	fi
+
+	mv $TMP2 $TMP1
+	if [ $NEXT = vertical ]; then
+		NEXT=horizontal
+	else
+		NEXT=vertical
+	fi
+done