[Bug driver/82754] -m32 -B doesn't work with crtn.o

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82754

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
GCC first looks for crt files under ./32.  It checks ./ only if the installed
crt files don't exist.