Fixes to make the perl build reproducible:

a) Remove the \n from configure_attr.sh since it gets quoted differently depending on
   whether the shell is bash or dash which can cause the test result to be incorrect.
   Reported upstream: https://github.com/arsv/perl-cross/issues/87

b) Sort the order of the module lists from configure_mods.sh since otherwise
   the result isn't the same leading to makefile differences.
   Reported upstream: https://github.com/arsv/perl-cross/issues/88

c) Sort the Encode::Byte byte_t.fnm file output (and the makefile depends whilst 
   there for good measure)
   This needs to go to upstream perl (not done)

d) Use bash for perl-cross configure since otherwise trnl gets set to "\n" with bash
   and "" with dash
   Reported upstream: https://github.com/arsv/perl-cross/issues/87

RP 2020/2/7

Upstream-Status: Pending [75% submitted]
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org

Index: perl-5.30.1/cpan/Encode/Byte/Makefile.PL
===================================================================
--- perl-5.30.1.orig/cpan/Encode/Byte/Makefile.PL
+++ perl-5.30.1/cpan/Encode/Byte/Makefile.PL
@@ -171,7 +171,7 @@ sub postamble
     my $lengthsofar = length($str);
     my $continuator = '';
     $str .= "$table.c : $enc2xs Makefile.PL";
-    foreach my $file (@{$tables{$table}})
+    foreach my $file (sort (@{$tables{$table}}))
     {
         $str .= $continuator.' '.$self->catfile($dir,$file);
         if ( length($str)-$lengthsofar > 128*$numlines )
@@ -189,7 +189,7 @@ sub postamble
         qq{\n\t\$(PERL) $plib $enc2xs $ucopts -o \$\@ -f $table.fnm\n\n};
     open (FILELIST, ">$table.fnm")
         || die "Could not open $table.fnm: $!";
-    foreach my $file (@{$tables{$table}})
+    foreach my $file (sort (@{$tables{$table}}))
     {
         print FILELIST $self->catfile($dir,$file) . "\n";
     }