Fixes the following linker errors (simplified):
  ld: in function `G1CMOopClosure::do_oop(oopDesc**)':
  undefined reference to `void G1CMOopClosure::do_oop_work<oopDesc*>(oopDesc**)'
  ld: in function `G1CMOopClosure::do_oop(unsigned int*)':
  undefined reference to `void G1CMOopClosure::do_oop_work<unsigned int>(unsigned int*)'
  ld: in function `G1RootRegionScanClosure::do_oop(oopDesc**)':
  undefined reference to `void G1RootRegionScanClosure::do_oop_work<oopDesc*>(oopDesc**)'

This is probably caused by devirtualization adding calls to these
template functions--as undefined, when only the declaration is visible
in a compilation unit; and since the definitions are marked inline
they may be not emitted in other compilation units either.
There are more undefined symbols from the same missing #include in
some object files that happen to be emitted in others, but that may
change any time when the optimizer decides to inline them, too.
The full list is:
  _ZN14G1CMOopClosure11do_oop_workIP7oopDescEEvPT_
  _ZN14G1CMOopClosure11do_oop_workIjEEvPT_
  _ZN22G1RebuildRemSetClosure11do_oop_workIP7oopDescEEvPT_
  _ZN22G1RebuildRemSetClosure11do_oop_workIjEEvPT_
  _ZN23G1RootRegionScanClosure11do_oop_workIP7oopDescEEvPT_
  _ZN23G1RootRegionScanClosure11do_oop_workIjEEvPT_
  _ZN25G1ScanEvacuatedObjClosure11do_oop_workIP7oopDescEEvPT_
  _ZN25G1ScanEvacuatedObjClosure11do_oop_workIjEEvPT_
  _ZN28G1ConcurrentRefineOopClosure11do_oop_workIP7oopDescEEvPT_
  _ZN28G1ConcurrentRefineOopClosure11do_oop_workIjEEvPT_
  _ZN29G1ScanObjsDuringScanRSClosure11do_oop_workIP7oopDescEEvPT_
  _ZN29G1ScanObjsDuringScanRSClosure11do_oop_workIjEEvPT_
  _ZN31G1ScanObjsDuringUpdateRSClosure11do_oop_workIP7oopDescEEvPT_
  _ZN31G1ScanObjsDuringUpdateRSClosure11do_oop_workIjEEvPT_

This patch adds the missing #include statement to pull in the
definitions of the functions listed above to the sources of the
objects where I found undefined references to these functions.

Signed-off-by: Alexander Miller <alex.miller@gmx.de>

--- jdk11u-jdk-11.0.14-ga/src/hotspot/share/gc/g1/g1CodeBlobClosure.cpp
+++ jdk11u-jdk-11.0.14-ga/src/hotspot/share/gc/g1/g1CodeBlobClosure.cpp
@@ -26,6 +26,7 @@
 #include "code/nmethod.hpp"
 #include "gc/g1/g1CodeBlobClosure.hpp"
 #include "gc/g1/g1CollectedHeap.inline.hpp"
+#include "gc/g1/g1OopClosures.inline.hpp"
 #include "gc/g1/heapRegion.hpp"
 #include "gc/g1/heapRegionRemSet.hpp"
 #include "oops/access.inline.hpp"
--- jdk11u-jdk-11.0.14-ga/src/hotspot/share/gc/g1/g1HeapVerifier.cpp
+++ jdk11u-jdk-11.0.14-ga/src/hotspot/share/gc/g1/g1HeapVerifier.cpp
@@ -28,6 +28,7 @@
 #include "gc/g1/g1CollectedHeap.inline.hpp"
 #include "gc/g1/g1ConcurrentMarkThread.hpp"
 #include "gc/g1/g1HeapVerifier.hpp"
+#include "gc/g1/g1OopClosures.inline.hpp"
 #include "gc/g1/g1Policy.hpp"
 #include "gc/g1/g1RemSet.hpp"
 #include "gc/g1/g1RootProcessor.hpp"
--- jdk11u-jdk-11.0.14-ga/src/hotspot/share/gc/g1/g1StringDedupQueue.cpp
+++ jdk11u-jdk-11.0.14-ga/src/hotspot/share/gc/g1/g1StringDedupQueue.cpp
@@ -25,6 +25,7 @@
 #include "precompiled.hpp"
 #include "classfile/javaClasses.inline.hpp"
 #include "gc/g1/g1CollectedHeap.hpp"
+#include "gc/g1/g1OopClosures.inline.hpp"
 #include "gc/g1/g1StringDedup.hpp"
 #include "gc/g1/g1StringDedupQueue.hpp"
 #include "logging/log.hpp"