Fixed version parsing and added initial split package suppor

[thomas.diesler]

 Version version = null;
 if (versionString != null)
 {
 // Handle version strings with quotes
 if (versionString.startsWith("\"") && versionString.endsWith("\""))
 versionString = versionString.substring(1, versionString.length() - 1);

 version = Version.parseVersion(versionString);
 }

 OSGiPackageCapability capability = new OSGiPackageCapability(name, version, metadata, exportPackage);
 capability.setSplitPackagePolicy(SplitPackagePolicy.First);

With -r92810 all tests should pass again