fix stowing of relative links when --no-folding is used

With a tree like this:

    .
    |-- stow
    |   `-- pkg
    |       `-- lib
    |           |-- itk-current -> itk4.0.0
    |           `-- itk4.0.0
    |               `-- libitk4.0.0.so
    `-- target
        `-- lib
            |-- itk4.0.0 -> ../../stow/pkg/lib/itk4.0.0
            `-- libfoo-1.2.3.so

stowing pkg with the --no-folding option resulted in itk-current
being "unpacked":

    .
    `-- target
        `-- lib
            |-- itk-current
            |   `-- libitk4.0.0.so -> ../../../stow/pkg/lib/itk-current/libitk4.0.0.so
            |-- itk4.0.0
            |   `-- libitk4.0.0.so -> ../../../stow/pkg/lib/itk4.0.0/libitk4.0.0.so
            `-- libfoo-1.2.3.so

This commit fixes it so that it gets stowed as a symlink:

  .
  `-- target
      `-- lib
          ...
          |-- itk-current -> ../../stow/pkg/lib/itk-current
          ...

Thanks to Gabriele Balducci for reporting this problem:

    http://thread.gmane.org/gmane.comp.gnu.stow.general/6676

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/Stow.pm.in b/lib/Stow.pm.in
index 2e0b71e..851bb86 100755
--- a/lib/Stow.pm.in
+++ b/lib/Stow.pm.in
@@ -520,7 +520,7 @@ sub stow_node {
             }
         }
     }
-    elsif ($self->{'no-folding'} && -d $path) {
+    elsif ($self->{'no-folding'} && -d $path && ! -l $path) {
         $self->do_mkdir($target);
         $self->stow_contents(
             $self->{stow_path},