Code cleanup.

git-svn-id: http://svn.finmath.net/finmath%20lib/trunk@483 48fcbb9e-5639-0410-8b25-842128a4905d
Changed RandomVariableInterface and RandomVariable to be fully immutable. This step is to prepare for the introduction of some cool Java 8 features.

git-svn-id: http://svn.finmath.net/finmath%20lib/trunk@487 48fcbb9e-5639-0410-8b25-842128a4905d
Corrected JavaDoc.

git-svn-id: http://svn.finmath.net/finmath%20lib/trunk@489 48fcbb9e-5639-0410-8b25-842128a4905d
Changed calibration in LMM to default to analytic swaption approximation.

git-svn-id: http://svn.finmath.net/finmath%20lib/trunk@490 48fcbb9e-5639-0410-8b25-842128a4905d
Organized imports.

git-svn-id: http://svn.finmath.net/finmath%20lib/trunk@491 48fcbb9e-5639-0410-8b25-842128a4905d
Code cleanup (corrected a type due to a search-and-replace hickup)

git-svn-id: http://svn.finmath.net/finmath%20lib/trunk@493 48fcbb9e-5639-0410-8b25-842128a4905d