Fix hardlink creation.
Fix hardlink creation.

We try to fix some symlinks twice - avoid this with "test -L".
Review URL: http://codereview.chromium.org/6822055

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@4840 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client