Prelim changes to allow multi-class limits

Hey Jim,

I've done a bit of work on the `JavadocFormatter` for creating the option to specify multiple classes using *-Dlimit*. Strangely, I have it working great using the *Run Configurations* option within Eclipse (probably some more fine tuning I'll need to do, but it gets the fundamental job done), but have trouble running it from the Command Line.

I've cleaned and compiled *liferay-portal*, tried two classes that are in the same package (and different), and various other tests. I continually get the same error message. This is the Command Line error message:

***E:\ce\liferay-portal>ant format-javadoc -Dlimit=UserImpl,TeamImpl***
***Buildfile: E:\ce\liferay-portal\build.xml***

***format-javadoc:***
     ***[echo] Run "ant compile compile-test" before using format-javadoc to generate***
 ***@Override tags.***
    ***[java] Loading file:/E:/ce/liferay-portal/portal-impl/classes/system.properties***
     ***[java] Loading file:/E:/ce/liferay-portal/portal-impl/classes/system-ext.properties***
     ***[java] Input directory is ./***
     ***[java] Limit on UserImpl***
     ***[java] Loading file:/E:/ce/liferay-portal/portal-impl/classes/portal.properties***

***BUILD FAILED***
***Target "TeamImpl" does not exist in the project "portal".***

I'm beginning to think it may be a problem with my computer's configuration, but maybe it's something else. If you have any suggestions for quick fixes, let me know. We can explore this more Monday as well.

Thanks!