Clarify responsibilities for creating request and response in the exchange in the case of a handler; aligning with Javadoc for the Exchange
 
Motivated by a further review comment from Mark de Reeper

git-svn-id: https://svn.forgerock.org/openig@182 dbb9e58e-28e6-4ce0-90e8-f11d9605b710
OPENIG-115 Added CookieHeader unit tests.
- Fixed OPENIG-122 (required by tests)



git-svn-id: https://svn.forgerock.org/openig@183 dbb9e58e-28e6-4ce0-90e8-f11d9605b710
OPENIG-106 CR-3544 Fix checkstyle errors
* Fixed a couple of copyright headers referencing ForgeRock Inc instead of ForgeRock AS.
* Avoid _ (underscore) in variable names

git-svn-id: https://svn.forgerock.org/openig@184 dbb9e58e-28e6-4ce0-90e8-f11d9605b710