Adding missing functionality to ncm-pam

* Add support for the include directive.
* Add support for access files.
Whitespace and pom clean ups in ncm-pam

* untabify pam.pm
* remove duplicate licence info
* clean up the pom.xml
Merge pull request #142 from ned21/ncm-pam-fixes

NCM PAM fixes.

Align ncm-pam with Morgan Stanley's latest code.