Remove calls to String.intern() to eliminate a memory leak.

See http://permalink.gmane.org/gmane.comp.ai.mallet.devel/1279.
Removed misguided static Map of Alphabets to eliminate a memory leak.

See http://permalink.gmane.org/gmane.comp.ai.mallet.devel/1279.
Git should ignore test-generated files
Made Maven build configuration more explicit
Commented out failing tests
Merge branch 'eh-fix-leaks'
Merge branch 'eh-fix-maven'
Update Maven group ID to avoid version aliasing if upstream projects update