NEX-1643 dtrace provider for smbsrv
Also illumos 1841:
 DTrace smb provider was mis-implemented, doesn't exist.
Add back handlers for read/write raw, so that
 legacy dtrace consumers can find the probes.
Kill extra arg in smb_negotiate
Fix missing "done" probe with smb_notify
Add example consumer: smb-trace.d
fix soi_pid

*** 248,257 ****
--- 248,263 ----
          DTRACE_PROBE1(__smb_##name, type1, arg1);
  
  #define DTRACE_SMB_2(name, type1, arg1, type2, arg2) \
          DTRACE_PROBE2(__smb_##name, type1, arg1, type2, arg2);
  
+ #define DTRACE_SMB2_1(name, type1, arg1) \
+         DTRACE_PROBE1(__smb2_##name, type1, arg1);
+ 
+ #define DTRACE_SMB2_2(name, type1, arg1, type2, arg2) \
+         DTRACE_PROBE2(__smb2_##name, type1, arg1, type2, arg2);
+ 
  #define DTRACE_IP(name)                                         \
          DTRACE_PROBE(__ip_##name);
  
  #define DTRACE_IP1(name, type1, arg1)                                   \
          DTRACE_PROBE1(__ip_##name, type1, arg1);