#5 Should use internationalized error msgs

[Scot P. Floess]

Ensure all failure messages are internationalized!!!!

For instance in generate-javacc, if keros-build.JAVACC_HOME is not set, a
non-internationalized English only message is displayed:

<fail unless = "keros-build.JAVACC_HOME" message = "ERROR: You must set
keros-build.JAVACC_HOME!!!"/>

This needs to be internationalized.

[Scot P. Floess]

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Consideration should be given to the "translate" (http://ant.apache.org/manual/OptionalTasks/translate.html) optional Ant
task.