s1734: added create user, updated get user

projects/cadcAccessControl-Server/build.xml

...rol-Server/src/ca/nrc/cadc/ac/server/UserPersistence.java

...ontrol-Server/src/ca/nrc/cadc/ac/server/ldap/LdapDAO.java

...ol-Server/src/ca/nrc/cadc/ac/server/ldap/LdapUserDAO.java

...r/src/ca/nrc/cadc/ac/server/ldap/LdapUserPersistence.java

...src/ca/nrc/cadc/ac/server/web/users/CreateUserAction.java

...src/ca/nrc/cadc/ac/server/web/users/DeleteUserAction.java

...er/src/ca/nrc/cadc/ac/server/web/users/GetUserAction.java

...c/ca/nrc/cadc/ac/server/web/users/GetUserNamesAction.java

...src/ca/nrc/cadc/ac/server/web/users/ModifyUserAction.java

...rver/src/ca/nrc/cadc/ac/server/web/users/UserLogInfo.java

...rver/src/ca/nrc/cadc/ac/server/web/users/UsersAction.java

...c/ca/nrc/cadc/ac/server/web/users/UsersActionFactory.java

...ver/src/ca/nrc/cadc/ac/server/web/users/UsersServlet.java

.../test/src/ca/nrc/cadc/ac/server/ldap/LdapUserDAOTest.java

...a/nrc/cadc/ac/server/web/users/UserActionFactoryTest.java

.../src/ca/nrc/cadc/ac/server/web/users/UsersActionTest.java