* autoload.cc: Drop old comment.
	* hookapi.cc (PEHeaderFromHModule): Return PIMAGE_NT_HEADERS.
	(rvadelta): Convert to function and merge in rvadelta_get.
	(remap): New function to have code for remapping big executables
	only once.
	(find_first_notloaded_dll): Simplify.  Don't handle different
	architecture at all.  Call remap.
	(hook_or_detect_cygwin): Ditto.