Zero doesn't build on BSD: redefinition of 'entry_frame_call_wrapper'

[Christian Thalinger]

Roman, could you fix this?  -- Chris

/Users/cthaling/ws/hotspot/src/cpu/zero/vm/frame_zero.inline.hpp:145:32: error: redefinition of 'entry_frame_call_wrapper'
inline JavaCallWrapper* frame::entry_frame_call_wrapper() const {
                               ^
/Users/cthaling/ws/hotspot/src/share/vm/runtime/frame.hpp:356:20: note: previous definition is here
  JavaCallWrapper* entry_frame_call_wrapper() const { return *entry_frame_call_wrapper_addr(); }
                   ^
1 error generated.