[SDL] SDL_image & libtiff

[Julien Lecomte]

Hi,

When configuring SDL_image with libtiff, libtiff wasn't found in my case.
I solved the problem by adding: 'LIBS="$LIBS $IMG_LIBS"' after line 163 
of configure.in ('if test x$enable_tif = xyes; then').
I guess the problem is that my libtiff is a static lib, I didn't bother 
to create the shared one, and that libtiff depends on libjpeg and libz.

I also guess that other static libraries (like possibly libpng) might 
share (sic) this problem.

If I have a time, I'll review the configure.in and post a patch (don't 
use my solution above, it's ugly !)

Julien