vanitygen cd1a7282

* add vanitygen formula
* patch to fix processor count detection

I'm making a decision to add this patch because it fixes a bug that affects all
OSX builds of the software. As of the revision hardcoded into this formula, this
patch is necessary for processor count detection to function without error.

https://github.com/samr7/vanitygen/pull/17
Merge pull request #2 from colindean/feature/vanitygen

add vanitygen cd1a7282