[Bug other/58312] libssp configure check for "usable vsnprintf" is broken on cross-compilers.

[brooks at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58312

--- Comment #1 from Brooks Moses <brooks at gcc dot gnu.org> ---
Jakub, I added you to the cc list in hopes that you may be able to comment on
the original reasoning for this being a runtime check rather than simply a
check for the ability to link a program calling vsnprintf, since you were the
original author.