Move these forward class definitions out of globalDefinitions.hpp and redistribute to the files that need said forward declarations.

// 'Forward' declarations of frequently used classes
// (in order to reduce interface dependencies & reduce
// number of unnecessary compilations after changes)

class ClassFileStream;

class Thread;
class VMThread;
class JavaThread;
class Threads;

class VM_Operation;
class VMOperationQueue;

class CodeBlob;
class CompiledMethod;
class nmethod;
class RuntimeBlob;
class CompiledIC;
class relocInfo;
class ScopeDesc;
class PcDesc;

class RFrame;
class CompiledRFrame;
class InterpretedRFrame;

class vframe;
class javaVFrame;
class interpretedVFrame;
class compiledVFrame;
class externalVFrame;
class entryVFrame;

class RegisterMap;

class Mutex;
class Monitor;
class BasicLock;
class BasicObjectLock;

class PeriodicTask;

class JavaCallWrapper;

class oopDesc;

class NativeCall;

class StubQueue;

class outputStream;

class ResourceArea;

class DebugInformationRecorder;
class ScopeValue;
class CompressedStream;
class DebugInfoReadStream;
class DebugInfoWriteStream;
class LocationValue;

class MonitorInfo;

class OffsetClosure;
class OopMapCache;
class InterpreterOopMap;
class OopMapCacheEntry;
class OSThread;

typedef int (*OSThreadStartFunc)(void*);

class Space;

class JavaValue;
class methodHandle;
class JavaCallArguments;