title: Spring Tool Suite failing to start with error
body: <p>I was using Spring tool suite, I just upgraded it to latest version <code>spring-tool-suite-3.5.1.RELEASE-e4.3.2-linux-gtk-x86_64</code> and now I am not able to start it. It gives below error:</p>
  
  <pre><code>VM terminated. Exit code=1
  /usr/bin/java
  -Dosgi.requiredJavaVersion=1.6
  -Xms40m
  -Xmx768m
  -XX:MaxPermSize=256m
  -jar /home/vishal/install/sts/sts-3.5.1.RELEASE//plugins/org.eclipse.equinox.launcher_1.3.0.v20130327-1440.jar
  -os linux
  -ws gtk
  -arch x86_64
  -showsplash
  -launcher /home/vishal/install/sts/sts-3.5.1.RELEASE/STS
  -name STS
  --launcher.library /home/vishal/install/sts/sts-3.5.1.RELEASE//plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.1.200.v20140116-2212/eclipse_1508.so
  -startup /home/vishal/install/sts/sts-3.5.1.RELEASE//plugins/org.eclipse.equinox.launcher_1.3.0.v20130327-1440.jar
  --launcher.overrideVmargs
  -exitdata 98006
  -product org.springsource.sts.ide
  -vm /usr/bin/java
  -vmargs
  -Dosgi.requiredJavaVersion=1.6
  -Xms40m
  -Xmx768m
  -XX:MaxPermSize=256m
  -jar /home/vishal/install/sts/sts-3.5.1.RELEASE//plugins/org.eclipse.equinox.launcher_1.3.0.v20130327-1440.jar 
  </code></pre>
  
  <p>I have ubuntu 12.04 and this Java version:</p>
  
  <pre><code>java version "1.7.0_25"
  Java(TM) SE Runtime Environment (build 1.7.0_25-b15)
  Java HotSpot(TM) 64-Bit Server VM (build 23.25-b01, mixed mode)
  </code></pre>
  
  <p>This is STS.ini</p>
  
  <pre><code>-vm
  /usr/lib/jvm/jdk1.7.0/bin/java
  -startup
  plugins/org.eclipse.equinox.launcher_1.3.0.v20130327-1440.jar
  --launcher.library
  plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.1.200.v20140116-2212
  -product
  org.springsource.sts.ide
  --launcher.defaultAction
  openFile
  -vmargs
  -Dosgi.requiredJavaVersion=1.6
  -Xms40m
  -Xmx768m
  -XX:MaxPermSize=256m
  </code></pre>