FMSLogo Code

Refactoring: Move logic for invalidating the screen from LoadBitmapFile to LoadImage
LoadImage is the function which actually draws to the screen so it's the one that knows what needs to be invalidated.
This removes unnecessary invalidation when BITLOADSIZE is used.

Fix a typo in the documentation for DLLCALL:
"allows to extend the reach" -> "allows you to extend the reach"

Clarify the documentation of "small enough" is for BITLOAD

Compile as "large address aware".
On systems which support it, this enables FMSLogo to access 3GB of memory instead of the usual 2GB for 32-bit programs.

Update the expected test results to account for the new tests that were added for FMSLogo 8.3.0.

Update the expected test results to account for the new tests that were added for FMSLogo 8.3.0.

Partially implement feature request #129:
BITLOAD and Bitmap -> Load... can now load JPEG image files as an undocumented feature.
The implementation uses wxWidgets to load the JPEG, which uses libjpeg from the IJG.
The feature is incomplete. It should also be able to load PNG and GIF, have some good tests for all supported file formats, have translations in the file picker for Bitmap -> Load... and be documented.

Fix a recent (unreleased) regression that caused BITLOADSIZE to load the bitmap.
This was introduced by recent refactoring which didn't account for an undocumented and subtle calling convention to instruct OpenDIB not to draw the bitmap to the screen.
I documented this calling convention and added a regression test to help prevent this from happening again.
I make it obvious (not subtle) in the future.

Partially implement feature request #129:
BITLOAD and Bitmap -> Load... can now load JPEG image files as an undocumented feature.
The implementation uses wxWidgets to load the JPEG, which uses libjpeg from the IJG.
The feature is incomplete. It should also be able to load PNG and GIF, have some good tests for all supported file formats, have translations in the file picker for Bitmap -> Load... and be documented.

Add a comment to LL speculating on its history and purpose.