Code from installed libtexinfo.so.0 run for non-installed texi2any

[Gavin Smith]

I have just had a frustrating time trying to work out why none of
the changes I was making to the parsetexi module were taking effect.
For example, the same debugging messages were still being printed even
though I had effaced all instances of them from the source code.

I suspected that installed files were being used but I could not find
where.  I deleted files under /usr/local/share/texinfo but this made
no difference.

Eventually, I had the idea to run the program under gdb and set a
breakpoint:

>>>>>>>>>>>>>>>

$ gdb perl
Reading symbols from perl...
(No debugging symbols found in perl)
(gdb) r ./texi2any.pl ../test/test.texi
Starting program: /usr/bin/perl ./texi2any.pl ../test/test.texi
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
test.texi:1: warning: entry for index `vr' outside of any node
test.texi: warning: document without nodes
[Inferior 1 (process 1277273) exited normally]
(gdb) b reset_parser
Breakpoint 1 at 0x7ffff7537bb9
(gdb) r
Starting program: /usr/bin/perl ./texi2any.pl ../test/test.texi
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Breakpoint 1, 0x00007ffff7537bb9 in reset_parser () from 
/usr/local/lib/libtexinfo.so.0
(gdb) 

>>>>>>>>>>>>>>>

Bingo.  /usr/local/lib/libtexinfo.so.0 is being run.  It shouldn't even
be installed directly in /usr/local/lib.

I am not sure if I have done while experimenting to incorrectly place
this file here, but if not, this is a problem.

I can work around it in the meantime by deleting the installed file
and never running "make uninstall" until this issue is fixed.