Tweak hg-migrate to deal with pre-existing pnacl/src directory. This is terribly uninteresting, but may affect really old checkouts.
Tweak hg-migrate to deal with pre-existing pnacl/src directory.
This is terribly uninteresting, but may affect really old checkouts.

TBR= dschuff
Review URL: https://chromiumcodereview.appspot.com/9429017

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@7856 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

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