r21535: - fixed a crash in the RAW-ACLS test. When a dcerpc_pipe is created

r21535: - fixed a crash in the RAW-ACLS test. When a dcerpc_pipe is created
using the pattern in the clilsa code, it didn't fill in the p->binding
structure. This affects nearly all users of dcerpc_pipe_open_smb(), so
the simplest fix is to ensure that dcerpc_pipe_open_smb() initialises
the binding if its not already there.

- re-enable the RAW-ACLS test
(This used to be commit d8875c286d2be49c01703d8fd58bbc1842054bd9)