Merge branch 'feature/support-af-unix-sockets' into 'master'

Support AF_UNIX sockets

See merge request !255
5 jobs for master in 19 minutes and 20 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed #24931
build:linux

00:09:59

passed #24932
build:redox

00:09:44

 
  Test
failed #24935
allowed to fail
fmt

00:01:15

passed #24933
test:linux

00:01:03

failed #24934
test:redox

00:09:20

 
Name Stage Failure
failed
test:redox Test
qemu-system-x86_64: cannot set up guest memory 'pc.ram': Cannot allocate memory

## redoxer (failure, qemu exit status ExitStatus(ExitStatus(256)) ##
make[1]: *** [verify] Error 2
Makefile:166: recipe for target 'verify' failed
make[1]: Leaving directory '/builds/redox-os/relibc/tests'
Makefile:91: recipe for target 'test' failed
make: *** [test] Error 2
ERROR: Job failed: exit code 1
failed
fmt Test
                     *error = 0;

return 0;
- },
+ }
_ => (),
},
_ => (),
ERROR: Job failed: exit code 1