Tarsnap 1.0.35

Closes #21433.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
mksh R47

Update mksh to R47 (released yesterday) and skip building the
preformatted manpage (‘-r’ option) since we only install the
manpage source, not the preformatted version

Closes #21432.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
tika 1.4

Closes #21430.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
eigen 3.2.0

Closes #21429.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
serf 1.3.0

Closes #21427.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
serf: pass build variables

Fixes #21434.
gnuplot: fix LuaRequirement
rbenv-binstubs 1.1 (new formula)

Closes #21317.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>