ld: Update gld${EMULATION_NAME}_place_orphan for PE/PEP

ld: Update gld${EMULATION_NAME}_place_orphan for PE/PEP

Similar to ldelf_place_orphan, initialize hold from orig_hold at run-time
in PE and PEP gld${EMULATION_NAME}_place_orphan.

	* emultempl/pe.em (orphan_init_done): Make it file scope.
	(gld${EMULATION_NAME}_finish): Set orphan_init_done to false for
	the object-only output.
	(gld${EMULATION_NAME}_place_orphan): Rename hold to orig_hold.
	Initialize hold from orig_hold at run-time.
	* emultempl/pep.em (orphan_init_done): Make it file scope.
	(gld${EMULATION_NAME}_finish): Set orphan_init_done to false for
	the object-only output.
	(gld${EMULATION_NAME}_place_orphan): Rename hold to orig_hold.
	Initialize hold from orig_hold at run-time.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>