2009-11-15 Doug Kwan <dougkwan@google.com>

2009-11-15  Doug Kwan  <dougkwan@google.com>

	* arm.cc (Target_arm::may_use_arm_nop): New method definition.
	(Arm_relocate_functions::arm_branch_common): Change method defintion
	in class definition to a method declaration and update list of formal
	parameters.
	(Arm_relocate_functions::plt32, Arm_relocate_functions::call,
	Arm_relocation_functions::jump24): Adjust call to
	Arm_relocate_functions::arm_branch_common.  Update list of formal
	parameters.
	(Arm_relocate_functions::xpc25): New method definition.
	(Arm_relocate_functions::arm_branch_common): Move method defintion
	out from class definition.  Use stubs for mode-switching and extending
	branch ranges.
	(Target_arm::Relocate::relocate): Handle weakly-undefined symbols
	specially.  Change code to enable use of stubs in ARM branches.