SCTK: Validate that we can extract all valuable information from a JAR manifest

[pombredanne]

In particular there are standard properties but also OSGI bundle-specific properties with useful origin and license information.

[JonoYang]

@AyanSinhaMahapatra I think we have done what we can to get as much info from pom.xml and manifest.mf files?

[AyanSinhaMahapatra]

@JonoYang yeah this was added at #3447
Closing!