[skip ci] Updated licenses and gitignores

options/license/Knuth-CTAN

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+This software is copyrighted. Unlimited copying and redistribution
+of this package and/or its individual files are permitted
+as long as there are no modifications. Modifications, and
+redistribution of modifications, are also permitted, but
+only if the resulting package and/or files are renamed.

options/license/libutil-David-Nugent

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+Copyright (c) 1995 David Nugent <davidn@blaze.net.au>
+All rights reserved.
+
+
+Redistribution and use in source and binary forms, with or without modification, is permitted provided that the following conditions are met:
+
+1.	Redistributions of source code must retain the above copyright notice immediately at the beginning of the file, without modification, this list of conditions, and the following disclaimer.
+
+2.	Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+3.	This work was done expressly for inclusion into FreeBSD. Other use is permitted provided this notation is included.
+
+4.	Absolutely no warranty of function or purpose is made by the author David Nugent.
+
+5.	Modifications may be freely made to this file providing the above conditions are met.