添加Mac版本二进制文件,默认编译参数编译.

```
$ ./dnsforwarder -h
DNSforwarder by holmium. Version 5.0.11 . License : GPL v3.
 Time of compilation : Sep 18 2014 22:53:07.

http://micasmica.blogspot.com/2011/08/dns.html
https://github.com/holmium/dnsforwarder

Usage : dnsforwarder [args].
 [args] is case sensitivity and can be zero or more (in any order) of:
  -f <FILE>  Use configuration <FILE> instead of the default one.
  -q         Quiet mode. Do not print any information.
  -e         Show only error messages.
  -d         Daemon mode. Running at background.
  -P         Try to probe all the fake IP addresses held in false DNS responses.

  -p         Prepare needed environment.

  -h         Show this help.

Output format:
 Date & Time [Udp|Tcp|Cache|Hosts|Refused|Blocked][Client IP][Type in querying][Domain in querying] : Message size
    Results
```