added more recent return codes

docs/curl.1

@@ -884,6 +884,24 @@ Malformed telnet option.
 The remote peer's SSL certificate wasn't ok
 .IP 52
 The server didn't reply anything, which here is considered an error.
+.IP 53
+SSL crypto engine not found
+.IP 54
+Cannot set SSL crypto engine as default
+.IP 55
+Failed sending network data
+.IP 56
+Failure in receiving network data
+.IP 57
+Share is in use (internal error)
+.IP 58
+Problem with the local certificate
+.IP 59
+Couldn't use specified SSL cipher
+.IP 60
+Problem with the CA cert (path? permission?)
+.IP 61
+Unrecognized transfer encoding
 .IP XX
 There will appear more error codes here in future releases. The existing ones
 are meant to never change.