Add cov->nui for full and full stat. type of cov. information. Tested using CMS Z data. This completes the implementation.

git-svn-id: https://svnsrv.desy.de/basic/h1fitter/trunk@1530 b2a8d302-ca0a-427a-b7b9-081adbce06bc
better quality fig 8

git-svn-id: https://svnsrv.desy.de/basic/h1fitter/trunk@1531 b2a8d302-ca0a-427a-b7b9-081adbce06bc
better quality fig 8

git-svn-id: https://svnsrv.desy.de/basic/h1fitter/trunk@1532 b2a8d302-ca0a-427a-b7b9-081adbce06bc