After the changes to use the copy attribute, building glibc for ia64
fails, even with older compilers, because
sysdeps/ia64/fpu/sfp-machine.h has a definition of _strong_alias that
now differs from the one in libc-symbols.h.
That definition is a relic of this file coming from libgcc, as are
some other such macro definitions in this file; in the glibc context,
there is no need for those macros, and this patch removes them to fix
the build.
Tested with build-many-glibcs.py for ia64-linux-gnu.
* sysdeps/ia64/fpu/sfp-machine.h (__LITTLE_ENDIAN): Remove.
(__BIG_ENDIAN): Likewise.
(__BYTE_ORDER): Likewise.
(strong_alias): Likewise.
(_strong_alias): Likewise.