This is needed to build an independent toolchain with g++ that doesn't think
that all these headers are in C.
Change-Id: Ie9a8ccfcab7780d6a4e5722777d61c2b1b312001
Aligned the list of the function declared in std:: to
match gcc.
In the first cut, too many functions were included.
The test under system/extras/tests/bionic/libstdc++ already
has the correct (shorter) list.