created java dependency container project
includes javamail dependency library
for non EE containers.
Changed tomcat to use prereq from non EE project
The assembled tomcat gets library out of the java project now
instead of getting them from the j2ee project.
Javamail added to the assembled tomcat.
Added mail session factory
The MailSessionFactory creates a session factory if none is configured
using whatever JavaMail library is available.
Obtaining a session via name lookup is still supported and takes
precedence
addressing Rayan feedback
added logging to DefaultMimeEmail
made variables private on MailSessionFactory
Merge pull request #12 from LorenzoBoccaccia/javamail

JavaMail integration in tomcat redistributable