Skip static tests if not static perl and not author - many false negatives

Author: mohawk2

t/03-xsstatic.t

@@ -11,6 +11,9 @@ use MakeMaker::Test::Utils;
 use MakeMaker::Test::Setup::XS;
 use Test::More;
 
+plan skip_all => "Disabled as broken perl installs give false negative"
+  # if not static perl, and not author
+  if $Config{usedl} eq 'define' and !$ENV{AUTHOR_TESTING};
 plan skip_all => "ExtUtils::CBuilder not installed or couldn't find a compiler"
   unless have_compiler();
 plan skip_all => 'Shared perl library' if $Config{useshrplib} eq 'true';