rename .posix-warn to .env-warn

diff --git a/tests/.env-warn b/tests/.env-warn
new file mode 100644 (file)
index 0000000..0c19e2d
--- /dev/null
+++ b/tests/.env-warn
@@ -0,0 +1,8 @@
+   ***************************** WARNING ************************************
+
+       You seem to have set the POSIXLY_CORRECT environment variable,
+       this might cause some of the tests in this package to fail.
+       If any test fails, clear POSIXLY_CORRECT from the environment,
+       and rerun all tests.
+
+   ***************************** WARNING ************************************