Implement amd64 support for OP_CARDTABLE.
Implement amd64 support for OP_CARDTABLE.

	* amd64-codegen.h (amd64_alu_reg_membase_size): Add support
	for RIP based addressing.

	* cpu-amd64.md: Add card_table_wbarrier.

	* mini-amd64.c (mono_arch_output_basic_block): Emit the
	new OP.

	* mini-amd64.c (mono_arch_emit_exceptions): Handle another
	kind of patch-info - GC_CARD_TABLE_ADDR. This is required
	because we can neither have 64bits immediates with amd64
	or 2 scratch regiters with current regalloc.

	* mini-amd64.h: Define MONO_ARCH_HAVE_CARD_TABLE_WBARRIER.

biotrump/ffts-tec,biotrump/ffts-tec,biotrump/ffts-tec,linkotec/mono_arch,linkotec/mono_arch,biotrump/ffts-tec,linkotec/mono_arch