1. Add sincos, sincosf, and sincosl to API >= 9 (for ARM only,
because X86 and MIPS have it already)
2. Add nan, nanf, nanl, and tgammaf to API >= 13 (11 actually,
but we don't want to add another API which is not released)
3. Add log2, log2f, log2l, logbl, nexttoward, and nexttowardl to
API >= 18
See b.android.com/38423
Change-Id: I0a756aeeddafc3862f3c0ae38218cb3301608231
* Headers were copied from frameworks/native/opengl/include/GLES3/.
* Symbol lists were generated with ndk/build/tools/gen-system-symbols.sh.
* Symbols are identical between architectures
Change-Id: I011094ea3b479cf166ffb6bef3778cde683fc502