Description of problem:
Radiusclient use incorrect AccessRequest for mschap and mschap-v2 protocol to 
authenticate against Radius Server. But old versions working fine.

Version-Release number of selected component (if applicable):
radiusclient-ng-0.5.2

How reproducible:
Cannot use MS-CHAP or MS-CHAP-V2 protocol to authenticate user. Other 
protocols (PAP and CHAP) working correct.

Steps to Reproduce:
1. Try to authenticate with ms-chap protocol
  
Actual results:
Dump of packet by freeradius:
Packet-Type = Access-Request
        Service-Type = Framed-User
        Framed-Protocol = PPP
        User-Name = "dicr"
        NAS-IP-Address = 127.0.0.1
        NAS-Port = 1
        Client-IP-Address = 127.0.0.1
This is incorrect, because there no MS-Chap-Challenge attribute for MS-CHAP 
request. 

Expected results:
Old version libradiusclient 0.3.1 work fine with the next packet dump:
Packet-Type = Access-Request
        Service-Type = Framed-User
        Framed-Protocol = PPP
        User-Name = "dicr"
        MS-CHAP-Challenge = 0x1e9cc0ca7c6a1e9e4bb40c89fc2142ff
        MS-CHAP2-Response = 
0x3d0092321c3e61197fdc418e730691cc350f0000000000000000ac9d910a28c5b9b839e9afa798919ad3b7d0be59a52e15e8
        NAS-IP-Address = 127.0.0.1
        NAS-Port = 1
        Client-IP-Address = 127.0.0.1

Additional info:
With PAP and CHAP protocol it working fine, including UserPassword or 
ChapChallenge and ChapPassword attributes, but MS-CHAP request is malformed 
and not correct. Freeradius say "No UserPassword attribute" and refuse 
authentication, but with old version libradiusclient all working fine..