Upgraded sbt (0.12.4 to 0.13.1), sbt-launch.jar (0.13.1), sbt-assembly (...

Upgraded the following components to improve the 'sbt/sbt assembly' performance and use Scala 2.10. With sbt-assembly 0.9.2, sbt assembly used to take very long time on certain hardware.

sbt
  - 0.12.4 to 0.13.1

sbt-launch.jar
  - 0.11.3-2 to 0.13.1
  - Downloaded from http://repo.typesafe.com/typesafe/ivy-releases/org.scala-sbt/sbt-launch/0.13.1/sbt-launch.jar and renamed to sbt-launch-0.13.1.jar

sbt-assembly
  - 0.9.2 to 0.10.1

sbt-dependency-graph
  - 0.7.3 to 0.7.4

junit-interface
  - 0.9 to 0.10

junitXmlListener
  - Using the one for sbt 0.13 from https://github.com/chenkelmann/junit_xml_listener

The older version of sbt-launch (sbt-launch-0.11.3-2.jar) was removed.