Darwin, testsuite - Adjust two tests that fail on newer OS versions.

Newer OS versions (10.14+) do not provide some of the CRTs that are used
for older ones (e.g. 10.5), and thus link tests that specify targeting
such a revision fail.  We retain the testing of the correct defined OS
version number but switch to compile-only testing for these two tests.

2019-06-13  Iain Sandoe  <iain@sandoe.co.uk>

	* gcc.dg/darwin-minversion-1.c: Use compile rather than link/run.
	* gcc.dg/darwin-minversion-2.c: Likewise.

From-SVN: r272251

gcc/testsuite/ChangeLog

+2019-06-13  Iain Sandoe  <iain@sandoe.co.uk>
+
+	* gcc.dg/darwin-minversion-1.c: Use compile rather than link/run.
+	* gcc.dg/darwin-minversion-2.c: Likewise.
+
 2019-06-13  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR target/90871

gcc/testsuite/gcc.dg/darwin-minversion-1.c

 /* Basic test for -mmacosx-version-min switch on Darwin.  */
 /* { dg-options "-mmacosx-version-min=10.5" } */
-/* { dg-do run { target *-*-darwin* } } */
+/* { dg-do compile { target *-*-darwin* } } */
 
 int
 main ()

gcc/testsuite/gcc.dg/darwin-minversion-2.c

 /* Basic test for -mmacosx-version-min switch on Darwin.  */
 /* { dg-options "-mmacosx-version-min=10.1 -mmacosx-version-min=10.5" } */
-/* { dg-do run { target *-*-darwin* } } */
+/* { dg-do compile { target *-*-darwin* } } */
 
 int
 main ()