Remove the following (literal) text in the TNF copyrights:

* This code is derived from software contributed to The NetBSD Foundation
* by
*

XXX: If these originated from you and you want your

Remove the following (literal) text in the TNF copyrights:

* This code is derived from software contributed to The NetBSD Foundation
* by
*

XXX: If these originated from you and you want your name to be mentioned,
please add it.

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Move the servent and protoent tests to src/tests/lib/libc/net/ (where
they should have gone initially).