Log message:
archivers: Replace RMD160 checksums with BLAKE2s checksums

All checksums have been double-checked against existing RMD160 and
SHA512 hashes

Could not be committed due to merge conflict:
devel/py-traitlets/distinfo

The following distfiles were unfetchable (note: some may be only fetched
conditionally):

./devel/pvs/distinfo pvs-3.2-solaris.tgz
./devel/eclipse/distinfo eclipse-sourceBuild-srcIncluded-3.0.1.zip

Log message:
devel: Remove SHA1 hashes for distfiles

Log message:
Fix indentation in buildlink3.mk files.

The actual fix as been done by "pkglint -F */*/buildlink3.mk", and was
reviewed manually.

There are some .include lines that still are indented with zero spaces
although the surrounding .if is indented. This is existing practice.

Log message:
Import linenoise-1.0 as devel/linenoise

A minimal, zero-config, BSD licensed, readline replacement.

Noteworthy features:
 - Single and multi line editing mode with the usual key bindings implemented.
 - History handling.
 - Completion.
 - Hints (suggestions at the right of the prompt as you type).
 - About 1,100 lines of BSD license source code.
 - Only uses a subset of VT100 escapes (ANSI.SYS compatible).