Merge pull request #19 from anilsaldhana/master

PLINK-296: SSLValve from JBossWeb sandbox
Merge pull request #20 from anilsaldhana/master

PLINK-295:GenericHeaderAuthenticator
Merge pull request #21 from anilsaldhana/master

PLINK-296: unit test the SSLValve
Merge pull request #22 from anilsaldhana/master

PLINK-295: unit test the GenericHeaderAuthenticator
[PLINK-209] - Debug/Error inconsistency in exception logging.
Merge pull request #23 from pedroigor/master

[PLINK-209] - Debug/Error inconsistency in exception logging.