am 8169573c: Add <cmath> standard C++ header. This is needed for upcoming STLport experimentation.

Merge commit '8169573c8744ee3a484ea74bd5e06a8a4f708e37'

* commit '8169573c8744ee3a484ea74bd5e06a8a4f708e37':
  Add <cmath> standard C++ header.
tree: 5eecf58f62f61e94f9c404836775cf91290d1772
  1. libc/
  2. libdl/
  3. libm/
  4. libstdc++/
  5. libthread_db/
  6. linker/
  7. Android.mk