(.gitlab-ci.yml) Add windows-x64 target

[jdgleaver]

This PR adds a 64bit Windows target to the libretro .gitlab-ci.yml file.

In addition:

• Unused includes and stages have been removed from .gitlab-ci.yml
• The temporary output redirection file generated by the static makefile in the libretro directory has been renamed from nul to null, since nul is a forbidden filename on Windows (and it's existence on the filesystem breaks the libretro build process)

[unknownbrackets]

Normally one would pipe to NUL on Windows to avoid generating output, similar to piping to /dev/null on Unixlikes. If this is run under WSL or cygwin or something you'd just use /dev/null though, right?

I guess we can remove

ppsspp/.gitignore

Line 121 in 5484907

nul

now? And add null in its place...

-[Unknown]

[jdgleaver]

I guess we can remove
ppsspp/.gitignore
nul
now? And add null in its place...

I do apologise - I didn't notice the presence of nul in the .gitignore file. Should I PR this nul -> null change?

Normally one would pipe to NUL on Windows to avoid generating output, similar to piping to /dev/null on Unixlikes. If this is run under WSL or cygwin or something you'd just use /dev/null though, right?

I'm afraid I know virtually nothing about Windows (I'm 100% Linux). I was just the only one available/willing to try and sort out the build issues on our new infrastructure. Since I didn't want to meddle too much with things I have limited experience of, I thought it safest to just change the nul filename...

[hrydgard]

well I had issues with this creating a file called "nul" before, so...

[jdgleaver]

Okay, I got rid of the null file here: #14059

Sorry this took so long! Life has been chaotic recently....