As discussed earlier today, the vfs_shadow_copy2 module from master should work fine with samba 3.6.
We have been using vfs_shadow_copy2.c from commit dc461cade5becec21f8d1f2bb74fcf1a977a5ec2 with samba 3.6.4 for a few weeks now, and it works fine.
This should also fix bug 7287 in samba 3.6.
Ivo De Decker
Sorry, but this is for the imminent Samba 4.0 only.