FMSLogo Code

Enable setting the font face with SETLABELFONT on GNU/Linux.

Replace <section> with <variablelist> for the description of each menu item in the Workspace Editor.
Each <section> is rendered as a separate page, which is too much space for a one sentence description for something like Edit - Undo. This puts all items in the same menu on the same page.
This also removes some noise from the table of contents.

Add a screenshot of the workspace editor to the "Editor" section.

Change the documentation of items of the main menu from multiple <section> to a single <variablelist>.
A <section> is typically rendered as a separate page, which was too much for things like "Zoom - In", which only had a sentence of documentation.
Combining these related elements make the manual easier to navigate, particularlly by flattening the early part of the table of contents.

Rename createLabelFont to CreateLabelFont to better follow the code style.

Implement GetLabelFont() in pure wxWidgets.
This doesn't enable any new functionality, but it's a necessary step for doing so.

Change LABEL to always copy the memory DC to the screen.

For some unknown (to me) reason, DrawRotatedText translates the text slightly (and differently) depending on the angle, whereas the MSW ::TextOut was able to draw consistently. This results in the screen image being different from the memory image, which means that the screen image changes when it's refreshed. Rather than have this inconsistent drawing, the screen image is now always copied from the memory image, instead of being drawn separately.

Fix build breaks on MSW introduced when porting LABEL and LABELSIZE to wxWidgets

Remove a definition of HDC when WX_PURE is defined.
This is apparently no longer needed.

Port LABEL and LABELSIZE to use wxWidgets API
This enables both commands to function on GNU/Linux.