Update Tomcat

This change updates the blobstore to contain Tomcat 7.0.41.

[#51469891]
Update Spring Auto Reconfiguration

This change updates the blobstore to contain Spring Auto
Reconfiguration 0.6.7.

[#51469921]
Update OpenJDK 1.8

This change updates the blobstore to contain OpenJDK 1.8.0_M7.

[#51469877]
Update OpenJDK 1.7

This change updates the blobstore to contain OpenJDK 1.7.0_21.

[#51469861]
Update OpenJDK 1.6

This change updates the blobstore to contain OpenJDK 1.6.0_27.

[#51469843]
Bump src/health_manager_next:

Maria Shaldibina and Mark Rushakoff (4):
      Refactor droplet analysis
      Update varz initialization
      Test process heartbeat
      Delete droplets from registry that are not in desired state

Maria Shaldibina and Tim Labeeuw (6):
      Rename NatsBased + KnownState => ActualState
      Rename BulkApiBasedStateProvider and ExpectedStateProvider to DesiredState
      Remove the AppStateProvider parent class
      Move ActualState@set_desired_state to AppState. Rename ActualState#droplets to ActualState#app_states.
      Extract out a droplet registry from Actual State
      Rename AppState to Droplet
Merge pull request #87 from nebhale/java-buildpack-updates

Java buildpack updates
Bump src/health_manager_next:

Maria Shaldibina and Mark Rushakoff (5):
      Remove unused code
      Refactor droplet analysis, move into harmonizer
      Log when desired state not available
      Always mark droplets_analysis stopped when done with chunk
      Remove task tracking
Release login-server 1.2.3.
update grouter logrotate to sensible defaults