[PATCH] Minor fixes in test files at_var_print.exp & tautological_cmp.exp

[Yichun Zhang (agentzh)]

Hello!
On Tue, Aug 28, 2018 at 11:16 AM Yichun Zhang (agentzh) wrote:
> Fixed issues where we failed to interpret the macro variable $^PWD in
> the .stp template files and we incorrectly treats any stap runs with
> stderr output a failed run (i.e., with nonzero exit code). Also made
> some other minor improvements.

Just committed to master.

Best,
Yichun