Simple test harness for app_server tests

This was developped for the transformations test, but can be used for
other tests too. Extract the relevant classes to a separate file.

Remove test that can't work.

I didn't mean to commit this. Sorry again.

Add WizzNic

* Update sdl_image_x86 to a version that can load PNG files
* Update giflib_x86 to match what's required by the new SDL_image
package

Test case for pixel alignment on transforms.

Transforming an aligned rectangle shifts it up and left by 0.5 pixels.

Transformation test: Refactored duplicated code.

Add a transform test for DrawString with offsets

* The text is not drawn at all when some transforms are used.

Add a test that shows bitmap being wrongly clipped.

* The bitmap should cover the same area as the rectangle, but it
doesn't.

Transformation: add one more test

* Add test for a translation that makes things that are out of view
bounds to become visible
* Fix the "rectangles" test to handle scrolling of the view. It seems
that in some cases some of the rectangles are not drawn.

The gradient and bitmap tests currently have problem with view
scrolling, but I'm not sure why.

Transformation: Added test for nesting view states.

The test shows that nesting view states seems to work as expected...

Transformation: Added gradient test.

Transformation: Added BBitmap test

Slightly improve Transformation test to include text

New test for transformations

Simple test harness for app_server tests

This was developped for the transformations test, but can be used for
other tests too. Extract the relevant classes to a separate file.

Remove test that can't work.

I didn't mean to commit this. Sorry again.

Add WizzNic

* Update sdl_image_x86 to a version that can load PNG files
* Update giflib_x86 to match what's required by the new SDL_image
package

Test case for pixel alignment on transforms.

Transforming an aligned rectangle shifts it up and left by 0.5 pixels.

Transformation test: Refactored duplicated code.

Add a transform test for DrawString with offsets

* The text is not drawn at all when some transforms are used.

Add a test that shows bitmap being wrongly clipped.

* The bitmap should cover the same area as the rectangle, but it
doesn't.

Transformation: add one more test

* Add test for a translation that makes things that are out of view
bounds to become visible
* Fix the "rectangles" test to handle scrolling of the view. It seems
that in some cases some of the rectangles are not drawn.

The gradient and bitmap tests currently have problem with view
scrolling, but I'm not sure why.

Transformation: Added test for nesting view states.

The test shows that nesting view states seems to work as expected...

Transformation: Added gradient test.

Transformation: Added BBitmap test

Slightly improve Transformation test to include text

New test for transformations