Add support for Virgo 3.7

- Consume the latest org.eclipse.virgo.kernel-tools as a binary nested
  JAR inside org.eclipse.virgo.ide.manifest.core lib folder.
- Change Virgo37Provider to detect runtime version via  
  $VIRGO_HOME/lib/.version file and to assume that the java profile file 
  is now named java-server.profile
3 files changed