basic-improvements merge status

[David Edelsohn]

>>>>> Jan Hubicka writes:

>> #ifndef HAVE_SINF
>> float
>> sinf(float x)
>> {
>> return (float) sin(x);
>> }
>> #endif
>> 
>> is being compiled as

Jan> I think we can deal with -fno-builtin-fsin to avoid gcc from being
Jan> active on optimizing this.
Jan> The name sinf is reserved by C90 standard, so this is not valid C.

	Maybe libstdc++-v3/libmath/stubs.c should be compiled with
-fno-builtins.  It only tries to define sinf if sinf was not found by
configure.

David