Removes dartc reliance on its own libraries, now can be targeted at any implementation's libraries

compiler/scripts/darta_run.sh

 #!/bin/bash --posix
 #
 # Copyright (c) 2012, the Dart 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 file.
 
 
 # Prevent problems where the caller has exported CLASSPATH, causing our
 # computed value to be copied into the environment and double-counted
 # against the argv limit.
 unset CLASSPATH
 
 # Figure out where the dartc home is
 SCRIPT_DIR=`dirname $0`
-DARTC_HOME=`cd $SCRIPT_DIR; pwd`
-DIST_DIR=$DARTC_HOME/compiler
-DARTC_LIBS=$DIST_DIR/lib
+DARTA_HOME=`cd $SCRIPT_DIR; pwd`
+DIST_DIR=$DARTA_HOME/compiler
 
-DARTC_FLAGS=""
+DARTA_FLAGS=""
 
 # Make it easy to insert 'set -x' or similar commands when debugging problems with this script.
 eval "$JAVA_STUB_DEBUG"
 
 JVM_FLAGS_CMDLINE=""
 
 while [ ! -z "$1" ]; do
   case "$1" in
     --prof)
       # Ensure the preset -optimize flag is gone when profiling.
-      DARTC_FLAGS="--prof"
+      DARTA_FLAGS="--prof"
       shift ;;
     --debug)
       JVM_DEBUG_PORT=${DEFAULT_JVM_DEBUG_PORT:-"5005"}
       shift ;;
     --debug=*)
       JVM_DEBUG_PORT=${1/--debug=/}
       shift ;;
     --jvm_flags=*)
       JVM_FLAGS_CMDLINE="$JVM_FLAGS_CMDLINE ${1/--jvm_flags=/}"
       shift ;;
     *)             break ;;
   esac
 done
 
 if [ "$JVM_DEBUG_PORT" != "" ]; then
   JVM_DEBUG_SUSPEND=${DEFAULT_JVM_DEBUG_SUSPEND:-"y"}
   JVM_DEBUG_FLAGS="-agentlib:jdwp=transport=dt_socket,server=y,suspend=${JVM_DEBUG_SUSPEND},address=${JVM_DEBUG_PORT}"
 fi
 
 shopt -s execfail  # Return control to this script if exec fails.
 exec $JAVABIN -ea -classpath @CLASSPATH@ \
               ${JVM_DEBUG_FLAGS} \
               ${JVM_FLAGS} \
               ${JVM_FLAGS_CMDLINE} \
               com.google.dart.compiler.DartCompiler \
-              $DARTC_FLAGS \
+              $DARTA_FLAGS \
               "$@"
 
 echo "ERROR: couldn't exec ${JAVABIN}." 1>&2
 
 exit 1