Increase some test timeouts.

This patch increases timeouts on three tests I observed timing out on
slow systems.

	* malloc/tst-malloc-tcache-leak.c (TIMEOUT): Define to 50.
	* posix/tst-glob-tilde.c (TIMEOUT): Define to 200.
	* resolv/tst-resolv-res_ninit.c (TIMEOUT): Define to 50.

ChangeLog

@@ -1,3 +1,9 @@
+2018-01-04  Joseph Myers  <joseph@codesourcery.com>
+
+	* malloc/tst-malloc-tcache-leak.c (TIMEOUT): Define to 50.
+	* posix/tst-glob-tilde.c (TIMEOUT): Define to 200.
+	* resolv/tst-resolv-res_ninit.c (TIMEOUT): Define to 50.
+
 2018-01-03  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
 	[BZ #15479]

malloc/tst-malloc-tcache-leak.c

@@ -109,4 +109,5 @@ do_test (void)
   exit (0);
 }
 
+#define TIMEOUT 50
 #include <support/test-driver.c>

posix/tst-glob-tilde.c

@@ -140,4 +140,5 @@ do_test (void)
   return 0;
 }
 
+#define TIMEOUT 200
 #include <support/test-driver.c>

resolv/tst-resolv-res_ninit.c

@@ -71,4 +71,5 @@ do_test (void)
   return 0;
 }
 
+#define TIMEOUT 50
 #include <support/test-driver.c>