New profile scala-ide-juno-scala-2.10 and MANIFEST.MF fix

New mvn "scala-ide-juno-scala-2.10" build profile using the Scala IDE Juno build and Scala 2.10.0.

MANIFEST.MF takes library parameters from current build profile values.

Fixed files TemplateCompilationUnit.scala and CompilerUsing.scala compilation issues (slurpString -> string), this change will create compilation issues with the scala-io for 2.9.X library versions.

Commented TemplateTestSuite tests due to an issue with the eclipse framework (need help here).

Unfortunately the compilation issues fixes will break the 2.9.X profiles, I recommend a new branch.

The file ScalaTemplateCompiler.scala is taken from templates-compiler inside Play2. Since there is no version of this artifact for Scala 2.10.0 I can't see any other option but duplicate this single file.

![Screen Shot 2013-01-06 at 10 14 22 PM](https://f.cloud.github.com/assets/143813/46600/6d444630-5878-11e2-8ae4-fab46dbf7700.png)