update the trace distribution file
translate the comments in the source code.
rename the estimator from RealCompleteness to ZActualTraceCoverage
change variable type from long to double of W, U, L
implement the actual trace coverage as an estimator.
implement the actual unit coverage as an estimator.
replace original getCV with the estimator ZActualUnitCoverage
implement the 'observed trace classes' and 'observed unit classes'
as two estimators.
fix the comments.
implement 'actual number of trace classes', 'actual number of 
units', 'actual OUR' and 'actual OTR' as plugins.
update comments.
add command options U,T,u,t.
update the trace distribution file
Merge branch 'master' of github.com:hunter99/CompletenessFramework
update the third party jars.