Details:
- Relocated bli_4mh.c, bli_4mb.c, bli_4m.c, bli_3mh.c, bli_3m.c (and
associated headers) from frame/base to frame/base/induced.
- Added bli_xm.? to frame/base/induced, which implements
bli_xm_is_enabled(), which detects whether ANY induced complex method
is currently enabled.
- The new function bli_xm_is_enabled() is now used in bli_info.c to
detect when an induced complex method is used, so we know when to
return blocksizes from one of the induced methods' blocksize objects.
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