lib/55332: Multiple rump-based test programs now fail with shared library errors

[gson%gson.org@localhost (Andreas Gustafsson)]

>Number:         55332
>Category:       lib
>Synopsis:       Multiple rump-based test programs now fail with shared library errors
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    lib-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Jun 01 07:05:00 +0000 2020
>Originator:     Andreas Gustafsson
>Release:        NetBSD-current, source date >= 2020.05.30.19.51.32
>Organization:
>Environment:
System: NetBSD
Architecture: x86_64
Machine: amd64
>Description:

Several test programs in the ATF test suite are now failing with a
shared library error before running any of their test cases.  For
example:

  t_cd: Shared object "librumpdev_scsitest.so.0" not found
  t_hid: Shared object "librumpdev_hid.so.0" not found
  t_copy: Shared object "libkernspace.so.0" not found

These error messages are from

  http://www.gson.org/netbsd/bugs/build/amd64-baremetal/2020/2020.05.30.19.51.32/test.log

The problem started with this commit:

  2020.05.30.19.51.32 christos src/share/mk/bsd.lib.mk 1.382

There has been no automated report to current-users, nor is the issue
evident in the "new failures:" items on the bracket commit summary
pages, because those are based on individual test cases failing, but
here, the individual test cases neither pass nor fail as the entire
test program fails on startup.

>How-To-Repeat:

Run the ATF tests.

>Fix: