"jut" --- java utility classes

Packages
jut java utility classes collection "jut".
jut.io utilities related to the java.io package, taken from the java utility classes collection "jut".
jut.lang utilities related to the java.lang package, taken from the java utility classes collection "jut".
jut.ref utilities related to call by reference issues, taken from the java utility classes collection "jut".
jut.util.concurrent utilities related to the java.util.concurrent package, taken from the java utility classes collection "jut".