Add is_val_statically_known, ptr_mask and type_name intrinsics tests

[Oneirical]

Part of #45.

[FractalFir]

Quick question: are you on the newest rustc version?

The signature of create_dll_import_lib recently changed, so that could be the cause of the issues you have encountered.

[Oneirical]

Quick question: are you on the newest rustc version?

The signature of create_dll_import_lib recently changed, so that could be the cause of the issues you have encountered.

Yes, I realized this and edited the PR to remove this question. It works now, thank you!