as expected

Moved rebinding to function in Tk::FIJIUtils, added calls to
this function for every entry.

Addresses issue vecs/fiji#63 discovered in usability test

Addresses issue vecs/fiji#39

Addresses issue vecs/fiji#54

However, allow the user to disable these popups for the current session.

 - extract _add_driver_radiobutton_list from existing code
 - refactor it to allow it to be called repeatedly while reusing widgets
 - make some private Netlist functions public as they are used elsewhere :/
 - eliminate duplicated nets (low-hanging workaround) for a nuisance
   of _get_net_connections().
 - add FIJISearchWidget to the dialog and call _add_driver_radiobutton_list
   from its callback after filtering the driver list

Make the entry + search button + substring/globbing/regex choices
reusable as standalone widget.

Use the previous regex to validate the name only and check for a
defined non-empty string when using the names to append to indexed
names like "FIU 42".

Fix vecs/fiji#60 eventually.

Related to vecs/fiji#60

Related to vecs/fiji#60

(use_vars is default anyway thus drop it)

fixed invalid comparison and unnecessary print

Log it as an error but do not report it as such to certain callbacks thus
allowing to still save a replay configuration after an abort.

The dialog offers now:

* Substring search (searches for the entered string as substring)
* Globbing (converts glob to regex by FIJI::TextGlob)
* Conventional Perl Regexes

Otherwise, arguments to long options given with '=' are
not globbed.

Adress issue vecs/fiji#62

To work around latexbeamer limitations without going made.