Remove invalid clang ifdef about __builtin_isnan() and clang >= 3.7.

Bug: 23396112

Clang continues to have "int __builtin_isnan()" as the official builtin
definition, which causes conflicts with the NDK headers. This change
unconditionally leaves __builtin_isnan() out of the NDK headers when
using clang, since it really isn't necessary in any case.

Change-Id: Ifb5c1db40c11eb5984e1d64e8540e8a6537900ab
37 files changed
tree: 1a60b3e196ab03e56ca5355c02ae3c15b8bdc7de
  1. 4/
  2. 5/
  3. 6/
  4. 7/
  5. 8/
  6. 9/
  7. Android.mk
  8. CleanSpec.mk