alpha, powerpc build status

[Benjamin Kosnik]

CVS libstdc++-v3 powerpc and alpha now will bootstrap natively, under linux.
(this is with a newer 2.9.10 binutils...)

You'll need to update past here:

2000-06-22  Benjamin Kosnik  <bkoz@purist.soma.redhat.com>

	* acinclude.m4 (GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT): Redo. Use the
	same approach as GLIBCPP_CHECK_MATH_SUPPORT, only don't try to
	link against libm and don't use -fno-builtins...
	* math/mathconf.h: Change up builtin macros to new schema.
	* bits/std_cmath.h: And here. Wheee!
	* shadow/bits/std_cmath.h: And here.
	* acconfig.h: Change up builtin macros here.
	* math/cosf.c:  Remove.
	* math/fabsf.c:  Likewise.
	* math/sinf.c:  Likewise.
	* math/sqrtf.c:  Likewise.
	* math/Makefile.am (EXTRA_DIST):  Remove those four files.
	* math/Makefile.in:  Regenerate.