databases/memcached: update to version 1.5.2

[pizzamig]

Summary

databases/memcached: update to version 1.5.2

While I'm here, reorder some variables in the Makefile

Reviewed by\: swills (maintainer)
Approved by\: lme (mentor)
Approved by\: olivier (mentor)
Sponsored by\: trivago N.V.

Test Plan

portlint's fine.
build on 10.3 10.4 11.0 11.1 on i386 amd64

[lme]

The re-ordering was to please portlint, I guess?

[pizzamig]

In D12602#261438, @lme wrote:

The re-ordering was to please portlint, I guess?

The re-ordering was to please https://www.freebsd.org/doc/en_US.ISO8859-1/books/porters-handbook/porting-order.html and, incidentally, portlint.

[olivier]

Just wait for @swills approval before committing it because this port belongs to him.

[swills]

Approved, thanks!