Update M4 macros #32
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Update M4 macros #32
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This commit updates the M4 macros.
The ax_ folks fixed a bug in ax_gcc_x86_cpuid.m4 when ebx/rbx was not saved and restored. There were probably other fixes, too.
ax_ext.m4 supports a lot more processors and features. For example, XOP is now detected properly on non-AMD machines.