Fix is_dynamically_linked for macOS

See: https://travis-ci.org/JuliaPy/pyjulia/jobs/447296193#L1650

Author: tkf

test/test_compatible_exe.py

@@ -105,7 +105,11 @@ def is_dynamically_linked(executable):
             universal_newlines=True,
         )
         print_completed_proc(proc)
-        return "libpython" in proc.stdout or "/Python" in proc.stdout
+        return (
+            "libpython" in proc.stdout
+            or "/Python" in proc.stdout
+            or "/.Python" in proc.stdout
+        )
     # TODO: support Windows
     return None