2008-01-06 Hans Boehm <Hans.Boehm@hp.com> (Really mostly Joerg Wagner)

2008-01-06 Hans Boehm <Hans.Boehm@hp.com> (Really mostly Joerg Wagner)
	* src/atomic_ops/generalize.h: Add test_and_set generalizations,
	Add AO_double_compare_and_swap generalizations.
	* src/atomic_ops/sysdeps/armcc/arm_v6.h: New file.
	* src/atomic_ops/sysdeps/gcc/arm.h: Handle V6 and V7.
	* src/atomic_ops/sysdeps/gcc/x86.h,
	src/atomic_ops/sysdeps/{gcc,msftc}/x86_64.h: Conditionally add
	compare_double_and_swap_double, commented out for msftc.
	* src/atomic_ops/sysdeps/standard_ao_double_t.h:  Add
	double_ptr_storage field.