archivers/lzip: Update to 1.25

This includes the following changes:

• Options '--empty-error' and '--marking-error' removed.
• Improved error handling.
• New documentaton chapter 'Syntax of command-line arguments'.

Drop GNU_CONFIGURE_MANPREFIX setting which is the default now since
commit 9fd7ee1cdf6c. [1]

Sort PLIST_FILES later in Makefile. [2]

Also this now requires GNU make to build.

Reported by: danfe [1], portclippy [2]