rename com.ibm.wala.cast.java.jdt.test to com.ibm.wala.ide.jdt.test

It looks like this change was made partially before, but maybe not
completed?  Anyway, this gets our JDT test launchers to work again.

com.ibm.wala.ide.jdt.test/launchers/JDTJava15IRTests.launch

@@ -25,7 +25,7 @@
 <booleanAttribute key="org.eclipse.jdt.junit.KEEPRUNNING_ATTR" value="false"/>
 <stringAttribute key="org.eclipse.jdt.junit.TESTNAME" value=""/>
 <stringAttribute key="org.eclipse.jdt.junit.TEST_KIND" value="org.eclipse.jdt.junit.loader.junit4"/>
-<stringAttribute key="org.eclipse.jdt.launching.JRE_CONTAINER" value="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.launching.macosx.MacOSXType/JDK 1.6"/>
+<stringAttribute key="org.eclipse.jdt.launching.JRE_CONTAINER" value="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.6"/>
 <stringAttribute key="org.eclipse.jdt.launching.MAIN_TYPE" value="com.ibm.wala.cast.java.test.JDTJava15IRTests"/>
 <stringAttribute key="org.eclipse.jdt.launching.PROGRAM_ARGUMENTS" value="-os ${target.os} -ws ${target.ws} -arch ${target.arch} -nl ${target.nl}"/>
 <stringAttribute key="org.eclipse.jdt.launching.PROJECT_ATTR" value="com.ibm.wala.ide.jdt.test"/>