.
	* dcrt0.cc (child_info_spawn::handle_spawn): Call fixup_lockf_after_exec
	with additional argument to specify if the process has been execed
	or spawned.
	* flock.cc (fixup_lockf_after_exec): Take bool parameter to handle
	exec and spawn differently.  In case of spawn, just give up POSIX
	locks in favor of the still running parent.  Add comments to explain.