MD5 Hash Issues in PHP Formula

Hi - I don't think you need to take this pull request, but I mainly wanted to show you the diff of what I had to do to get megalodon to run w/o errors.

This is what I was getting:
```
Error: undefined method `md5' for Cclient:Class
Please report this bug:
    https://github.com/mxcl/homebrew/wiki/troubleshooting
/usr/local/Library/Formula/cclient.rb:6
/usr/local/Library/Homebrew/formula.rb:427:in `require'
/usr/local/Library/Homebrew/formula.rb:427:in `factory'
/usr/local/Library/Homebrew/dependency.rb:31:in `to_formula'
/usr/local/Library/Homebrew/dependency.rb:74:in `expand'
/usr/local/Library/Homebrew/macos.rb:6:in `map'
/usr/local/Library/Homebrew/dependencies.rb:9:in `each'
/usr/local/Library/Homebrew/dependencies.rb:9:in `each'
/usr/local/Library/Homebrew/dependency.rb:63:in `map'
/usr/local/Library/Homebrew/dependency.rb:63:in `expand'
/usr/local/Library/Homebrew/formula.rb:487:in `recursive_dependencies'
/usr/local/Library/Homebrew/formula_installer.rb:496:in `lock'
/usr/local/Library/Homebrew/formula_installer.rb:24:in `initialize'
/usr/local/Library/Homebrew/cmd/install.rb:87:in `new'
/usr/local/Library/Homebrew/cmd/install.rb:87:in `install_formula'
/usr/local/Library/Homebrew/cmd/install.rb:81:in `install_formulae'
/usr/local/Library/Homebrew/cmd/install.rb:80:in `each'
/usr/local/Library/Homebrew/cmd/install.rb:80:in `install_formulae'
/usr/local/Library/Homebrew/cmd/install.rb:25:in `install'
/usr/local/bin/brew:94:in `send'
/usr/local/bin/brew:94
```

Even with these changes - i still had to change the perms on path "/usr/local/etc/php5/php.ini" in order to get it to run - otherwise it was throwing a perm error.