[Bug target/94630] General bug for changes needed to switch the PowerPC long double default

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94630

--- Comment #2 from Michael Meissner <meissner at gcc dot gnu.org> ---
When the default is changed, we will need to map __builtin_sprintf and company
just like GLIBC will do it if the user includes stdio.h.

Otherwise the gcc.dg/tree-ssa/builtin-sprintf.c test fails because it calls the
wrong sprintf for long double arguments.