PHP7 Supports

[laruence]

Hey:

This is a under working PR which try to make this extension works with PHP7.

Sorry for saying this, but I must say, the current implementation is really mess, and it must not works....

1. Cods style is mess (variable name, useless comments, indents etc)
2. The codes is not completely right, there even are some codes returns stack allocated zvals.
3. No tests scripts(phpt files).... I even don't know does it work or not. 
4. Most of these mistakes are in cluster relates codes.

Anyway, I hope I can make this a little better, but I am afraid I don't have much time on this...

thanks

[laruence]

nevermind, I will make a PR against phpredis/phpredis instead... thanks

[edtechd]

Hi! Well done! Thank you! I have merged your changes to this repo.

[laruence]

@edtechd oh, great, thanks for the merging...... but...it is till underworking..(I even didn't test it). I tried to merge this to the phpredis/phpredis repo, but lots of conflicts... :<