Getopt::Long does not always respect no_ignore_case with pass_through

[Jeffrey Ratcliffe]

Binary package hint: perl

The attached program illustrates the problem. The output in all recent versions up to 5.10.0-11.1ubuntu2 is below:

$./GO.pl
$VAR1 = {
          'l' => 'foo'
        };
$VAR1 = {
          'L' => 1
        };
$VAR1 = {
          'l' => 'foo'
        };
$VAR1 = {};

As no_ignore_case is turned on, and a -L option is not used, the 'L' => 1 from the second print statement is incorrect, and should be 'l' => 1, similarly, the fourth print statement should also produce 'l' => 1