Resize 32bit BMPs and TIFFs (done)

[joehoyle]

I have modified phpthumb to also resize upto 32bit BMPs (which get converted to JPEG resources before resizing).

I have also added support for resizing TIFFs (only if image magick is available), again to JPEG resources, so they are treated as JPEGS fro then on.

I coud fork phpthumb and initiate a pull request if you might want to include this in core

[sirshurf]

If this is still workable, I would be glad to include this....