* arm.cc: Added support for the ARM relocations:

	* arm.cc: Added support for the ARM relocations:
	R_ARM_MOVW_BREL_NC, R_ARM_MOVT_BREL, R_ARM_MOVW_BREL,
	R_ARM_THM_MOVW_BREL_NC, R_ARM_THM_MOVT_BREL, R_ARM_THM_MOVW_BREL.
	(Arm_relocate_functions::movw_rel_nc): Renamed (was
	movw_prel_nc).
	(Arm_relocate_functions::movw_rel): New method.
	(Arm_relocate_functions::movt_rel): Renamed (was movt_prel).
	(Arm_relocate_functions::thm_movw_rel_nc): Renamed (was
	thm_movw_prel_nc).
	(Arm_relocate_functions::thm_movw_rel): New method.
	(Arm_relocate_functions::thm_movt_rel): Renamed (was
	thm_movt_prel).
	(Target_arm::Scan::local): Handle MOVW_BREL/MOVT_BREL
	relocations.
	(Target_arm::Scan::global): Likewise.
	(Target_arm::Relocate::relocate): Likewise.
	(Target_arm::Relocatable_size_for_reloc::get_size_for_reloc):
	Likewise.