Disable webapp cache by default
-------------------------------

                 Key: MWAR-231
                 URL: http://jira.codehaus.org/browse/MWAR-231
             Project: Maven 2.x WAR Plugin
          Issue Type: Task
    Affects Versions: 2.1-beta-1
            Reporter: Stephane Nicoll


In 2.1-alpha-1, an experimental webapp cache was introduced. The purpose was to 
save the whole list of dependencies being packaged in the war at each run. That 
way, reading that cache file again allows to detect which dependencies have 
changed and perform some smart added values such as removing artifacts that 
were no longer dependencies of the project. A similar feature would be 
available for SNAPSHOTs where the timestamp version has changed.

Unfortunately, this system is not yet ready for two main reasons:

1. It seems using XStream in certain environment has weird side effect (see 
MWAR-187)
2. The logic that checks whether or not an artifiact has changed is flawed, 
leading to unecessary warnings in the log (stating that the artifact has 
changed while it has not).

Before going further, I think it's safe to disable the functionality by 
default. A separate issue will be created to resolve theses issues.



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