libcasper: Move helper libraries from /lib/casper to /lib.

[jhb]

Summary

These libraries are linked to directly by applications rather than
opened at runtime via dlopen().

[oshogbo]

The idea for a separate directory was that we would have many libcasper helpers, and the /lib will get crowdy.
The Casper libraries are quite limited in number so I'm not sure if it's worth it to keep a separate directory here.

In general, I don't mind moving them to "/lib".

[jhb]

If a separate directory is used, we should really use -rpath to do it, but I think that's probably more work than its worth. I think we are not really worried about how many libraries are in /lib and /usr/lib. :)

[jlduran_gmail.com]

Taken from a truss output:

open("/lib/libcap_dns.so.2",O_RDONLY|O_CLOEXEC|O_VERIFY,066000) ERR#2 'No such file or directory'
open("/usr/lib/libcap_dns.so.2",O_RDONLY|O_CLOEXEC|O_VERIFY,066000) ERR#2 'No such file or directory'
open("/usr/lib/compat/libcap_dns.so.2",O_RDONLY|O_CLOEXEC|O_VERIFY,066000) ERR#2 'No such file or directory'
open("/usr/local/lib/libcap_dns.so.2",O_RDONLY|O_CLOEXEC|O_VERIFY,066000) ERR#2 'No such file or directory'
open("/usr/local/lib/compat/pkg/libcap_dns.so.2",O_RDONLY|O_CLOEXEC|O_VERIFY,066000) ERR#2 'No such file or directory'
open("/usr/local/lib/perl5/5.30/mach/CORE/libcap_dns.so.2",O_RDONLY|O_CLOEXEC|O_VERIFY,066000) ERR#2 'No such file or directory'
open("/usr/local/lib/perl5/5.32/mach/CORE/libcap_dns.so.2",O_RDONLY|O_CLOEXEC|O_VERIFY,066000) ERR#2 'No such file or directory'
open("/usr/local/llvm11/lib/libcap_dns.so.2",O_RDONLY|O_CLOEXEC|O_VERIFY,066000) ERR#2 'No such file or directory'
open("/usr/local/llvm15/lib/libcap_dns.so.2",O_RDONLY|O_CLOEXEC|O_VERIFY,066000) ERR#2 'No such file or directory'
open("/lib/casper/libcap_dns.so.2",O_RDONLY|O_CLOEXEC|O_VERIFY,066000) = 3 (0x3)

After this change, it'll match on the first attempt.

[emaste]

Makefile.inc1

3319

Don't we still need this for cleaning up old libs?

[jhb]

Makefile.inc1

3319

Sigh, I guess we do for old entries in Obsoletefiles.inc.

[jhb]

Drop change in list-old-libs