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Copied Queue, AbstractQueue, and PriorityQueue from src/dl, fixed some type parameterization, and added some basic tests. Added control for -warnunchecked in user properties file.
Ignore dist directory, control -warnunchecked setting from property, add init target to print banner with version.
Added Ant build file and support files to allow compilation of source with -gj and javadoc generation from the same source. Also added a sample JUnit test case.
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