Patch committed to trunk. Peter confirmed things work fine. Keeping this bug
open until a test is committed for this.

Created an attachment (id=1123) [details]
Example Java Login module

Here's the login module I'm using for my SC demo. Rename it to whatever and
copy it to wherever you think is appropriate.

Some notes for using it:

1) Edit $JAVA_HOME/jre/lib/security/java.security and uncomment the line that
looks like this (around line 78 in my file):

#login.config.url.1=file:${user.home}/.java.login.config

2) Add a ~/.java.login.config file that looks like this (changing the class
name as appropriate of course):

Login {
    org.globus.exec.service.utils.DemoLoginModule required;
};

3) Add -Djavax.security.auth.login.config=<path> to the GLOBUS_OPTIONS
environment variable in the container environment, where <path> is the path to
a password file of the following format:

name=<name>
password=<password>
usernames=<authorized username list>

The usernames should be a comma-separated list of usernames.

Committed patches from Deepti for automated tests for this feature. Bug open
for documentation.

Added automated tests along with a sample Configuration class and Login Module.
The updated documentation is available at
http://www-unix.globus.org/toolkit/docs/development/4.2-drafts/security/authzframe/authzframe-pdp.html#authzframe-pdp-userNameAuthz