FMSLogo Code

Fix a regression introduced when using wxImage to load bitmaps.
If the biClrUsed was negative or large, wxImage::LoadFromFile would throw a bad_alloc exception, causing FMSLogo to crash.
This is now patched in the library and (in case an unpatched library is used) also handled in FMSLogo.

Fix some bugs that prevented bitmaps from loading on GNU/Linux
1) Reading the header size assumed that long was four bytes.
Now it uses char and checks the magic numbers, not the BITMAPINFOHEADER size.
2) Fix a double-free (fclose was called twice due to incorrect usage of FFile)

Fix Bug #577; By rewriting OpenDIB in terms of wxImage/wxBitmap it can now read top-down bitmaps.
It still cannot handle 16bpp top-down bitmaps, which may be a bug in wxWidgets.
It also now leaks memory when loading malformed bitmaps. This may also be a bug in wxWidgets.

In addition to fixing this bug, using wxWidgets should enable bitmaps to be loaded on GNU/Linux (GTK+).

Fix some typos in file names in BITLOAD.16BPP

Integrate 8bpp-1x64000.bmp and rle8-64000x1.bmp into the test pass.
I had commented them out because I mistakenly thought that they weren't being rendered due to a bug. In fact, they are "large enough" that they are rendered in the upper-corner top-down and I just didn't notice this because I (incorrectly) expected to see them drawn at the turtle's location.

Integrate the rest of the bmptestsuite into the BITLOAD and BITLOADSIZE tests.

Hide the turtle when asking the tester if the screen looks correct in CHECKSCREEN.
This is important for small images where the turtle could obscure the picture.

Add some regression tests for BITLOAD/BITLOADSIZE using the bmptestsuite.
So far, only 1bpp bitmaps have been tested.

Add a suite of bitmaps for testing BITLOAD and BITLOADSIZE.

Rewrite FONTFACENAMES in terms of wxWidgets API
This was done to make it work on GNU/Linux (with GTK+)