[DRE-maint] Bug#898039: ruby-ncurses: should link with -lmenuw, not -lmenu

[Sven Joachim]

Source: ruby-ncurses
Version:  1.4.9-1
Tags: upstream

The configure script for ruby-ncurses apparently does not check for the
menuw library shipped in libncursesw6, but only for the menu library in
libncurses6.  This is the relevant excerpt from the build log[1}:

,----
| checking for the menu library...
| checking for menu.h... yes
| checking for new_menu() in -lmenu... yes
`----

And later it links with -lmenu, causing ruby-ncurses to depend on both
libncurses6 and libncursesw6.

Previous builds against libncursesw5 had disabled support for the menu
library altogether, because there were different development packages
for the wide and non-wide ncurses libraries and libmenu.so was not
present on the build system.


1. https://buildd.debian.org/status/fetch.php?pkg=ruby-ncurses&arch=amd64&ver=1.4.9-1%2Bb3&stamp=1525522165&raw=0