Bug#948504: Further analysis

[Steve Egbert]

Apparently, it is problematic at upstream Bug databse (first thought to 
be SourceForge, but now over at Github).

The current `configure.ac` does not detect properly for the 
`strlcpy()/strlcat()` C declarator which is actually located in the 
`/usr/include/file/file.h` C include file for Debian 10.2 x86_64.

Executing `autoreconf -i` does NOT fix this problem.

Hence, usual `autogen.sh` sequences of autotools does not get past the 
creation of `configure` script file.