Corrections to cookie processing options description in systemprops.xml

1. Corrected a typo and added links to cookie-processor.html
2. Moved description of ALLOW_NAME_ONLY option, so that it is near other "allow" options, and corrected an error:
The old text was saying that "true" = enforcing. Actually "true" is allowing, as the option name says.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1627912 13f79535-47bb-0310-9956-ffa450edef68