Rename fletch -> dartino

tools/spawn_vm_and_attach.sh

 #!/bin/bash
 # Copyright (c) 2015, the Dartino project authors. Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE.md file.
 
-# This program runs the Fletch VM in a virtual terminal controlled by the
+# This program runs the Dartino VM in a virtual terminal controlled by the
 # program "screen". It then attaches to the VM using the given command-line
 # arguments. Normal usage would be something like:
 #
-#  ./tools/spawn_vm_and_attach.sh out/DebugIA32Clang/fletch in session SESSION_NAME
+#  ./tools/spawn_vm_and_attach.sh out/DebugIA32Clang/dartino in session SESSION_NAME
 #
-# This is a tool that's intended for people building the Fletch VM. If you find
-# yourself using this to run Fletch on a regular basis, please get in touch
+# This is a tool that's intended for people building the Dartino VM. If you find
+# yourself using this to run Dartino on a regular basis, please get in touch
 # with the authors and let us know why. If you're unsure about how to reach the
 # authors, you're welcome to file an issue at
-# https://github.com/dart-lang/fletch/issues/new.
+# https://github.com/dart-lang/dartino/issues/new.
 
-fletch="${1}"
+dartino="${1}"
 shift
-if [ ! -x "${fletch}" ]; then
-  echo 1>&2 Usage: "$0" PATH_TO_FLETCH_EXECUTABLE
+if [ ! -x "${dartino}" ]; then
+  echo 1>&2 Usage: "$0" PATH_TO_DARTINO_EXECUTABLE
   exit 1
 fi
 
 # Make all errors fatal
 set -e
 
 # Create a FIFO file (aka named pipe)
 fifo=$(mktemp -u -t fifo)
 mkfifo "${fifo}"
 
-# Launch the Fletch VM in a detached screen session, and duplicate its output
+# Launch the Dartino VM in a detached screen session, and duplicate its output
 # to the FIFO (using script)
-screen -L -d -m script -t 0 -q -a "${fifo}" "${fletch}-vm"
+screen -L -d -m script -t 0 -q -a "${fifo}" "${dartino}-vm"
 
 # Wait for the first line of output from the VM
 tcp_socket=$(head -1 "${fifo}" | sed 's/^Waiting for compiler on //')
 
 # We're done with the FIFO
 rm "${fifo}"
 
 # Attach to the VM
-exec "${fletch}" attach tcp_socket "${tcp_socket}" "$@"
+exec "${dartino}" attach tcp_socket "${tcp_socket}" "$@"