Updated core project reference in the Eclipse root .classpath file.

Author: bitron

.classpath

@@ -3,7 +3,6 @@
 	<classpathentry excluding="processing/app/tools/format/|processing/app/tools/format/src/|processing/app/Trace.java|processing/app/RunnerClassLoader.java" kind="src" path="app/src"/>
 	<classpathentry kind="src" path="app/test"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
-	<classpathentry combineaccessrules="false" kind="src" path="/processing-core"/>
 	<classpathentry kind="lib" path="app/lib/antlr.jar"/>
 	<classpathentry kind="lib" path="app/lib/apple.jar"/>
 	<classpathentry kind="lib" path="app/lib/ecj.jar"/>
@@ -21,5 +20,6 @@
 	<classpathentry kind="lib" path="app/lib/jmdns-3.4.1.jar"/>
 	<classpathentry kind="lib" path="app/lib/jsch-0.1.50.jar"/>
 	<classpathentry kind="lib" path="app/lib/jssc-2.8.0.jar"/>
+	<classpathentry combineaccessrules="false" kind="src" path="/arduino-core"/>
 	<classpathentry kind="output" path="app/bin"/>
 </classpath>