Hack in the location of sys/ headers on linux for now on the CI

Author: finagolfin

stdlib/public/Platform/glibc.modulemap.gyb

@@ -122,29 +122,29 @@ module SwiftGlibc [system] {
 % if CMAKE_SDK not in ["LINUX", "ANDROID"]:
   header "sys/event.h"
 % end
-  header "sys/file.h"
-  header "sys/inotify.h"
-  header "sys/ioctl.h"
-  header "sys/ipc.h"
-  header "sys/mman.h"
-  header "sys/mount.h"
-  header "sys/msg.h"
-  header "sys/resource.h"
-  header "sys/select.h"
-  header "sys/sem.h"
-  header "sys/sendfile.h"
-  header "sys/shm.h"
-  header "sys/socket.h"
-  header "sys/stat.h"
-  header "sys/statvfs.h"
-  header "sys/time.h"
-  header "sys/times.h"
-  header "sys/types.h"
-  header "sys/uio.h"
-  header "sys/un.h"
-  header "sys/user.h"
-  header "sys/utsname.h"
-  header "sys/wait.h"
+  header "x86_64-linux-gnu/sys/file.h"
+  header "x86_64-linux-gnu/sys/inotify.h"
+  header "x86_64-linux-gnu/sys/ioctl.h"
+  header "x86_64-linux-gnu/sys/ipc.h"
+  header "x86_64-linux-gnu/sys/mman.h"
+  header "x86_64-linux-gnu/sys/mount.h"
+  header "x86_64-linux-gnu/sys/msg.h"
+  header "x86_64-linux-gnu/sys/resource.h"
+  header "x86_64-linux-gnu/sys/select.h"
+  header "x86_64-linux-gnu/sys/sem.h"
+  header "x86_64-linux-gnu/sys/sendfile.h"
+  header "x86_64-linux-gnu/sys/shm.h"
+  header "x86_64-linux-gnu/sys/socket.h"
+  header "x86_64-linux-gnu/sys/stat.h"
+  header "x86_64-linux-gnu/sys/statvfs.h"
+  header "x86_64-linux-gnu/sys/time.h"
+  header "x86_64-linux-gnu/sys/times.h"
+  header "x86_64-linux-gnu/sys/types.h"
+  header "x86_64-linux-gnu/sys/uio.h"
+  header "x86_64-linux-gnu/sys/un.h"
+  header "x86_64-linux-gnu/sys/user.h"
+  header "x86_64-linux-gnu/sys/utsname.h"
+  header "x86_64-linux-gnu/sys/wait.h"
   header "sysexits.h"
   header "syslog.h"
   header "tar.h"