2010-06-25 Doug Kwan <dougkwan@google.com>

2010-06-25  Doug Kwan  <dougkwan@google.com>

	* arm.cc (Target_arm::can_check_for_functions_pointers): Return true.
	(Target_arm::section_may_have_icf_unsafe_pointers): New method
	definition.
	(Target_arm::Scan::local_reloc_may_be_function_pointer,
	Target_arm::Scan::global_reloc_may_be_function_pointer): Implement
	target hook to detect function points.
	(Target_arm::Scan::possible_function_pointer_reloc): New method.
	* icf.h (Icf::check_section_for_function_pointers): Change type of
	parameter SECTION_NAME to const reference to std::string.  Use
	target hook to determine if section may have unsafe pointers.
	* target.h (Target::section_may_have_icf_unsafe_pointers): New
	method definition.