zgc/zgc and non-PCH builds

[Aleksey Shipilev]

Hi,

My personal CI had started doing non-PCH builds recently, and current zgc/zgc fails with
--disable-precompiled-headers build with lots of these:

/pool/buildbot/slaves/sobornost/zgc/build/build/linux-x86_64-normal-server-release/hotspot/variant-server/libjvm/objs/arrayKlass.o:
In function `ArrayKlass::complete_create_array_klass(ArrayKlass*, Klass*, ModuleEntry*, Thread*)':
/pool/buildbot/slaves/sobornost/zgc/build/src/hotspot/share/oops/arrayKlass.cpp:111: undefined
reference to `Handle::Handle(Thread*, oopDesc*)'
/pool/buildbot/slaves/sobornost/zgc/build/src/hotspot/share/oops/arrayKlass.cpp:111: undefined
reference to `Handle::Handle(Thread*, oopDesc*)'

You might want to see if ZGC includes are correct?

Thanks,
-Aleksey