[8u] RFR (XS) 8242788: Non-PCH build is broken after JDK-8191393

[Aleksey Shipilev]

8u-specific bug:
  https://bugs.openjdk.java.net/browse/JDK-8242788

Simple fix:

diff -r 6c179587bf5b src/share/vm/utilities/ostream.cpp
--- a/src/share/vm/utilities/ostream.cpp        Thu Apr 09 20:58:56 2020 +0000
+++ b/src/share/vm/utilities/ostream.cpp        Wed Apr 15 07:24:34 2020 +0200
@@ -30,4 +30,5 @@
 #include "runtime/mutexLocker.hpp"
 #include "runtime/os.hpp"
+#include "runtime/vmThread.hpp"
 #include "utilities/defaultStream.hpp"
 #include "utilities/ostream.hpp"

Testing: Linux x86_64 {release,fastdebug,slowdebug} non-PCH build

-- 
Thanks,
-Aleksey