Tools: remove absolute paths in run_in_terminal_window

Also add quotes to avoid ambiguous redirect issue

Tools/autotest/run_in_terminal_window.sh

@@ -7,15 +7,15 @@ name="$1"
 shift
 echo "Starting $name : $*"
 # default to xterm as it has the most consistent options and can start minimised
-if [ -n "$DISPLAY" -a -x /usr/bin/xterm ]; then
-  /usr/bin/xterm -iconic -xrm 'XTerm*selectToClipboard: true' -xrm 'XTerm*initialFont: 6' -n "$name" -name "$name" -T "$name" -hold -e $* &
-elif [ -n "$DISPLAY" -a -x /usr/bin/konsole ]; then
-  /usr/bin/konsole --hold -e $*
-elif [ -n "$DISPLAY" -a -x /usr/bin/gnome-terminal ]; then
-  /usr/bin/gnome-terminal -e "$*"
+if [ -n "$DISPLAY" -a -n "$(which xterm)" ]; then
+  xterm -iconic -xrm 'XTerm*selectToClipboard: true' -xrm 'XTerm*initialFont: 6' -n "$name" -name "$name" -T "$name" -hold -e $* &
+elif [ -n "$DISPLAY" -a -n "$(which konsole)" ]; then
+  konsole --hold -e $*
+elif [ -n "$DISPLAY" -a -n "$(which gnome-terminal)" ]; then
+  gnome-terminal -e "$*"
 elif [ -n "$STY" ]; then
   # We are running inside of screen, try to start it there
-  /usr/bin/screen -X screen -t $name $*
+  screen -X screen -t "$name" $*
 else
   filename="/tmp/$name.log"
   echo "Window access not found, logging to $filename"
@@ -24,6 +24,6 @@ else
 # the following "true" is to avoid bash optimising the following call
 # to avoid creating a subshell.  We need that subshell, or
 # _fdm_input_step sees ArduPilot has no parent and kills ArduPilot!
-  ( : ; $cmd $* &>$filename < /dev/null ) &
+  ( : ; $cmd $* &>"$filename" < /dev/null ) &
 fi
 exit 0