syndwarsfx: Remade more check_mouse_overlap*() functs

bflibrary: Separated another part of draw_gpoly() into sub-funct

swars: Fixed misinterpreted flag in draw_sort_sprite1b()

This is a step toward fixing the regressed Thermal vision
in buildings.

docs: Install instructions updated for patch release

Instructions now acknowledge the "patch" releases.

swars: Slightly better mission status message size selection

The function to draw status message still uses primitive
1x/2x only size selection. Until proper text draw function
is made, update the scaling so it looks circa proper size
in all resolutions.

swars: Slightly better mission status message size selection

The function to draw status message still uses primitive
1x/2x only size selection. Until proper text draw function
is made, update the scaling so it looks circa proper size
in all resolutions.

ci: Workaround for Github not liking wildcards in run cmd

swars: Fixed few misses in menu components positioning

swars: Move the controls sheet to show highlighted key

If moving highlighted key via keyboard, make sure it is always
visible on screen.
You can still hide it using mouse.

bfsoundlib: Treat 8-bit WAV files as unsigned