.
	* 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.
Merge branch 'Cygwin' into develop