* cygrun.c (main): Fix exit code so that it reflects UNIX style.

* winsup.api/ltp/fork04.c (setup): Accommodate change in putenv declaration.

winsup/testsuite/winsup.api/ltp/fork04.c

@@ -165,7 +165,7 @@ setup()
   tst_tmpdir();
 
   /* add a variable to the environment */
-  putenv("TESTPROG=FRKTCS04");
+  putenv(strdup("TESTPROG=FRKTCS04"));
 
   /* Pause if that option was specified */
   TEST_PAUSE;