RFR(integration blocker): 8191373: Multiple NUMA nodes expected

[Robbin Ehn]

Hi all, please review.

Windows needs to run os::init_2 before allocation polling page to proper setup 
numa. I saw no reason not to have it for all platforms after init_2.

Bug: https://bugs.openjdk.java.net/browse/JDK-8191373

Code below.

Tested tier 1-5/1-3

Thanks, Robbin

diff -r b4d2929683b6 src/hotspot/share/runtime/thread.cpp
--- a/src/hotspot/share/runtime/thread.cpp	Fri Nov 17 02:50:51 2017 +0100
+++ b/src/hotspot/share/runtime/thread.cpp	Fri Nov 17 13:30:28 2017 +0100
@@ -3560,10 +3560,10 @@
    TraceTime timer("Create VM", TRACETIME_LOG(Info, startuptime));

-  SafepointMechanism::initialize();
-
    // Initialize the os module after parsing the args
    jint os_init_2_result = os::init_2();
    if (os_init_2_result != JNI_OK) return os_init_2_result;

+  SafepointMechanism::initialize();
+
    jint adjust_after_os_result = Arguments::adjust_after_os();
    if (adjust_after_os_result != JNI_OK) return adjust_after_os_result;