Fixup ARM64 build

Limit builds to just "Windows x86" and "Debian stable:amd64", all other builds can be started manually

Update .gitlab-ci.yml file

See merge request STJr/SRB2!2186

Add ARM64=1 for arm build

Now, try compiling with musl on Debian testing

Disable libcurl when building without network support

See merge request STJr/SRB2!2182

dummy: fixup warnings

See merge request STJr/SRB2!2181

Fix FreeBSD build errors (again)

See merge request STJr/SRB2!2179

GitLab CI: More work

See merge request STJr/SRB2!2180

Update .gitlib-ci.yml

See merge request STJr/SRB2!2177

Update .gitlab-ci.yml file

See merge request STJr/SRB2!2176

CI bot for Linux and Windows builds

See merge request STJr/SRB2!2172

No need of counting bots.

Remove unused i var in Ban_Load_File()

Restore old code in GeneratePolygonNormals(), add TODO

Do not care for non-prototypes for clang-testing job 

Testing compiling with Debian's testing clang package

change name of artifact for clang build

there are 2 more name buffers that need to be bigger

fscanf need 26 chars in the name buffer

Try compiling with clang

fix misleading indentation

Try to hide echos

Only need to setup debconf in before_script

Let see if I need to need to run export again in the main build script

Update Debian image

Try to list packages that can be upgraded

Can not set CCACHE=1 in shell env

Move the exports to variables section

hide ccache statistics