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]
Merge pull request #87 from nebhale/java-buildpack-updates

Java buildpack updates