Mac nightlies testing

[Cauê Waneck]

Hi!

We've finally been able to build mac nightlies from our build server. The binaries are available at http://hxbuilds.s3-website-us-east-1.amazonaws.com/builds/haxe/mac/ .

I haven't made very thorough testing - in special, I've only tested the executable on a 10.8 box. It would be nice if you mac users can test them and report back if any problem is found.

Theoretically, the builds should be compatible even with 10.5. But not sure if that really holds.

Thanks!

Cauê