Integrate change #15879 from maint-5.6;

Win32::GetLongPathName() did not return valid results if there
were "." and ".." components in the path; also fix a potential
buffer overflow if the long path happens to be longer than
MAX_PATH (this can presumably happen if they use \\?\... style
paths); add a rather limited testsuite that exercises just the
edge cases
p4raw-link: @15879 on //depot/maint-5.6/perl: a15439704ef1059bf178ec4b1820fee7b2af7173

p4raw-id: //depot/perl@15880
p4raw-branched: from //depot/maint-5.6/perl@15877 'branch in'
	t/win32/longpath.t
p4raw-integrated: from //depot/maint-5.6/perl@15877 'ignore' MANIFEST
	(@12747..) 'merge in' t/harness (@11427..) win32/win32.c
	(@13145..)

1 files changed, 1 insertions, 0 deletions

diff --git a/t/harness b/t/harness
index a19363af3e..e9cf2ed925 100644
--- a/t/harness
+++ b/t/harness
@@ -57,6 +57,7 @@ if (@ARGV) {
         push @tests, <op/*.t>;
         push @tests, <uni/*.t>;
         push @tests, <lib/*.t>;
+	push @tests, <win32/*.t> if $^O eq 'MSWin32';
 	use File::Spec;
 	my $updir = File::Spec->updir;
 	my $mani  = File::Spec->catfile(File::Spec->updir, "MANIFEST");