From the comment about __NDK_FPABI__ vs __NDK_FPABI_MATH__:
NOTE: Disable for clang for now unless _NDK_MATH_NO_SOFTFP=1, because clang before 3.4 doesn't
allow change of calling convension for builtin and produces error message reads:
a.i:564:6: error: function declared 'aapcs' here was previously declared without calling convention
int sin(double d) __attribute__((pcs("aapcs")));
^
a.i:564:6: note: previous declaration is here
This applies to current clang as well, not just pre-3.4. Mark these
math functions as math functions.
Change-Id: I001b31df540aa3f61eec049f89346cbf2f11f128
