Configure check for smbwrapper

[Tim Potter]

> you need to be a bit careful with this. Some platforms don't have
> LD_PRELOAD but they do have equivalent functionality. For example IRIX
> uses _RLD_LIST, _RLDN32_LIST and _RLD64_LIST depending on what sort of
> executable it is.
> 
> see the code in smbsh.c 

Hmm...  Can I just set _RLD_LIST as well as LD_PRELOAD in my test?  This
assumes that running $CC $LDSHFLAGS $CFLAGS generates a 16 bit (?)
executable to use or do I have to built multiple versions of the shared
libraries to test?


Tim.