[PATCH 01/12] Undefine redirections after long double definition on __LDBL_COMPAT [BZ #23294]

[Joseph Myers]

I'd expect this patch to include tests (for both math.h and complex.h, 
that fail before and pass after the patch) in sysdeps/ieee754/ldbl-opt.

-- 
Joseph S. Myers
joseph@codesourcery.com