stdlib: Move tst-system to tests-container

Fix some issues with different shell and error messages.

Checked on x86_64-linux-gnu and i686-linux-gnu.

stdlib/Makefile

@@ -70,7 +70,7 @@ tests		:= tst-strtol tst-strtod testmb testrand testsort testdiv   \
 		   test-canon test-canon2 tst-strtoll tst-environ	    \
 		   tst-xpg-basename tst-random tst-random2 tst-bsearch	    \
 		   tst-limits tst-rand48 bug-strtod tst-setcontext	    \
-		   tst-setcontext2 test-a64l tst-qsort tst-system testmb2   \
+		   tst-setcontext2 test-a64l tst-qsort testmb2              \
 		   bug-strtod2 tst-atof1 tst-atof2 tst-strtod2		    \
 		   tst-rand48-2 tst-makecontext tst-strtod5		    \
 		   tst-qsort2 tst-makecontext2 tst-strtod6 tst-unsetenv1    \
@@ -92,6 +92,7 @@ tests		:= tst-strtol tst-strtod testmb testrand testsort testdiv   \
 tests-internal	:= tst-strtod1i tst-strtod3 tst-strtod4 tst-strtod5i \
 		   tst-tls-atexit tst-tls-atexit-nodelete
 tests-static	:= tst-secure-getenv
+tests-container := tst-system
 
 ifeq ($(build-hardcoded-path-in-tests),yes)
 tests += tst-empty-env

stdlib/tst-system.c

@@ -88,7 +88,8 @@ do_test (void)
 					 });
     support_capture_subprocess_check (&result, "system", 0, sc_allow_stderr);
 
-    char *returnerr = xasprintf ("%s: 1: %s: not found\n",
+    char *returnerr = xasprintf ("%s: execing %s failed: "
+				 "No such file or directory",
 				 basename(_PATH_BSHELL), cmd);
     TEST_COMPARE_STRING (result.err.buffer, returnerr);
     free (returnerr);
@@ -106,7 +107,8 @@ do_test (void)
 					 });
     support_capture_subprocess_check (&result, "system", 0, sc_allow_stderr);
 
-    char *returnerr = xasprintf ("%s: 1: %s: File name too long\n",
+    char *returnerr = xasprintf ("%s: execing %s failed: "
+				 "File name too long",
 				 basename(_PATH_BSHELL), cmd);
     TEST_COMPARE_STRING (result.err.buffer, returnerr);
     free (returnerr);
@@ -116,7 +118,7 @@ do_test (void)
     struct support_capture_subprocess result;
     result = support_capture_subprocess (call_system,
 					 &(struct args) {
-					   "kill -USR1 $$", 0, SIGUSR1
+					   "kill $$", 0, SIGTERM
 					 });
     support_capture_subprocess_check (&result, "system", 0, sc_allow_none);
   }
@@ -136,7 +138,7 @@ do_test (void)
     support_capture_subprocess_check (&result, "system", 0, sc_allow_none);
   }
 
-  TEST_COMPARE (system (":"), 0);
+  TEST_COMPARE (system (""), 0);
 
   return 0;
 }