I have tried the install using IM, installing IIT first then RTC; also vice versa; and together.  In all cases it failed.

The log file in the {install root}\configuration directory shows

!SESSION 2017-07-06 12:11:20.924 -----------------------------------------------
eclipse.buildId=unknown
java.fullversion=JRE 1.7.0 IBM J9 2.6 Windows 7 x86-32 20130617_152572 (JIT enabled, AOT enabled)
J9VM - R26_Java726_SR5_20130617_1436_B152572
JIT  - r11.b04_20130528_38954ifx1
GC   - R26_Java726_SR5_20130617_1436_B152572
J9CL - 20130617_152572
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_AU
Framework arguments:  -application org.eclipse.equinox.p2.reconciler.application -product org.eclipse.equinox.p2.reconciler.dropins.product
Command-line arguments:  -os win32 -ws win32 -arch x86 -application org.eclipse.equinox.p2.reconciler.application -product org.eclipse.equinox.p2.reconciler.dropins.product

!ENTRY org.eclipse.equinox.simpleconfigurator 4 0 2017-07-06 12:11:21.982
!MESSAGE 
!STACK 0
org.osgi.framework.BundleException: Exception in org.eclipse.equinox.internal.simpleconfigurator.Activator.start() of bundle org.eclipse.equinox.simpleconfigurator.
    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(Unknown Source)
    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(Unknown Source)
 at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(Unknown Source)
  at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(Unknown Source)
   at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Unknown Source)
  at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(Unknown Source)
 at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(Unknown Source)
 at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(Unknown Source)
   at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(Unknown Source)
   at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(Unknown Source)
 at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(Unknown Source)
   at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(Unknown Source)
Caused by: java.lang.IllegalStateException: The System Bundle was updated. The framework must be restarted to finalize the configuration change
  at org.eclipse.equinox.internal.simpleconfigurator.ConfigApplier.install(Unknown Source)
    at org.eclipse.equinox.internal.simpleconfigurator.SimpleConfiguratorImpl.applyConfiguration(Unknown Source)
    at org.eclipse.equinox.internal.simpleconfigurator.SimpleConfiguratorImpl.applyConfiguration(Unknown Source)
    at org.eclipse.equinox.internal.simpleconfigurator.Activator.start(Unknown Source)
  at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(Unknown Source)
 at java.security.AccessController.doPrivileged(Unknown Source)
  ... 12 more
Root exception:
java.lang.IllegalStateException: The System Bundle was updated. The framework must be restarted to finalize the configuration change
  at org.eclipse.equinox.internal.simpleconfigurator.ConfigApplier.install(Unknown Source)
    at org.eclipse.equinox.internal.simpleconfigurator.SimpleConfiguratorImpl.applyConfiguration(Unknown Source)
    at org.eclipse.equinox.internal.simpleconfigurator.SimpleConfiguratorImpl.applyConfiguration(Unknown Source)
    at org.eclipse.equinox.internal.simpleconfigurator.Activator.start(Unknown Source)
  at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(Unknown Source)
 at java.security.AccessController.doPrivileged(Unknown Source)
  at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(Unknown Source)
    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(Unknown Source)
 at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(Unknown Source)
  at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(Unknown Source)
   at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Unknown Source)
  at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(Unknown Source)
 at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(Unknown Source)
 at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(Unknown Source)
   at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(Unknown Source)
   at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(Unknown Source)
 at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(Unknown Source)
   at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(Unknown Source)

!ENTRY org.eclipse.osgi 4 0 2017-07-06 12:11:21.994
!MESSAGE Bundle org.eclipse.equinox.simpleconfigurator_1.0.200.v20100503 [1] is not active.

!ENTRY org.eclipse.osgi 4 0 2017-07-06 12:11:22.006
!MESSAGE Application error
!STACK 1
java.lang.IllegalStateException: Unable to acquire application service. Ensure that the org.eclipse.core.runtime bundle is resolved and started (see config.ini).
 at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(Unknown Source)
   at org.eclipse.core.runtime.adaptor.EclipseStarter.run(Unknown Source)
  at org.eclipse.core.runtime.adaptor.EclipseStarter.run(Unknown Source)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
  at java.lang.reflect.Method.invoke(Unknown Source)
  at org.eclipse.equinox.launcher.Main.invokeFramework(Unknown Source)
    at org.eclipse.equinox.launcher.Main.basicRun(Unknown Source)
   at org.eclipse.equinox.launcher.Main.run(Unknown Source)
    at org.eclipse.equinox.launcher.Main.main(Unknown Source)