use strlcpy & strlcat (#74) * refactor checkpubkeyperms() with safe BSD functions fix gcc8 warnings ``` svr-authpubkey.c: In function 'checkpubkeyperms': svr-authpubkey.c:427:2: warning: 'strncat' specified bound 5 equals source length [-Wstringop-overflow=] strncat(filename, "/.ssh", 5); /* strlen("/.ssh") == 5 */ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ svr-authpubkey.c:433:2: warning: 'strncat' specified bound 16 equals source length [-Wstringop-overflow=] strncat(filename, "/authorized_keys", 16); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ``` see https://www.sudo.ws/todd/papers/strlcpy.html * restore strlcpy in xstrdup see original https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/xmalloc.c?rev=1.16

#!/usr/bin/perl
#
# Splits the list of files and outputs for makefile type files
# wrapped at 80 chars
#
# Tom St Denis
use strict;
use warnings;

my @a = split ' ', $ARGV[1];
my $b = $ARGV[0] . '=';
my $len = length $b;
print $b;
foreach my $obj (@a) {
   $len = $len + length $obj;
   $obj =~ s/\*/\$/;
   if ($len > 100) {
      printf "\\\n";
      $len = length $obj;
   }
   print $obj . ' ';
}

print "\n\n";

# ref:         $Format:%D$
# git commit:  $Format:%H$
# commit time: $Format:%ai$