Build error (lib not found) when configured with "debug" and "extra-suffix"

[Kang-Che Sung]

Greetings ncurses developers.

I found out a build error can happen when I configure ncurses with
--with-debug, --with-extra-suffix and --with-progs.

Script to reproduce:

(Tested in Ubuntu 22.04 Jammy in a GitHub Actions CI)

```shell
wget 
'https://invisible-island.net/archives/ncurses/current/ncurses-6.5-20241102.tgz'
tar -x -f ncurses-6.5-20241102.tgz
cd ncurses-6.5-20241102
./configure \
  --prefix=/usr/local \
  \
  --with-progs \
  --with-termlib \
  \
  --with-debug \
  --without-profile \
  --without-normal \
  --without-shared \
  --without-libtool \
  \
  --enable-widec \
  --disable-reentrant \
  --enable-lib-suffixes \
  --with-extra-suffix=suffix
make -k
```

Actual result:

Programs such as `tic`, `infocmp`, `clear`, `tabs`, `tput`, `tset` and
`toe` will fail with the following error message.

```text
/usr/bin/ld: cannot find -lncursesw_gsuffix: No such file or directory
/usr/bin/ld: cannot find -ltinfow_gsuffix: No such file or directory
collect2: error: ld returned 1 exit status
make[1]: *** [Makefile:277: tic] Error 1
```

Expected result: No link error, of course.

Actually I was trying to figure out the naming pattern of ncurses
library files, when I tried configuring and building ncurses.
With the configuration above, I did notice the files
"libncurseswsuffix_g.a" and "libtinfowsuffix_g.a" were built.

But I was confused which naming pattern was intended by the
developers: Was it "-lncurseswsuffix_g" or "-lncursesw_gsuffix" ?

(While I don't expect the developers would fix this weird build
configuration, I do wish to know which naming was intended from
the start.)

Thank you.