Updates for new GPU architectures

[Ethan Ermovick]

Hi,

I am working on a project that compares various hardware architectures against each other for string matching. For string matching on GPU, I am using PFAC, however I noticed that there were some bugs that prevented compilation for newer GPUs (specifically SM 70 and above). I have created a PR to resolve this issue, and another small one. I am not sure if this project is still active, but I thought I'd post this here just in case.

Thank you,

Ethan