Extract just library files when on GL32

This avoids needlessly duplicating some meta files between GL and GL32.

Notably, this prevents Vulkan's ICD Loader from incorrectly reporting
duplicate GPUs for applications, which occurred because, before this
change, we were installing NVIDIA's ICD file in both the GL and GL32
extensions.

Now, we follow the approach used by Arch Linux for their
lib32-nvidia-utils package, which includes only the libraries and no
extra stuff.

nvidia-apply-extra.c

@@ -131,6 +131,10 @@ should_extract (struct archive_entry *entry)
   if (strcmp (ARCH, "i386") != 0 && has_prefix (path, "32/"))
     return 0;
 
+  /* Extract just library files when on GL32. */
+  if (strcmp (ARCH, "i386") == 0)
+    goto libs_only;
+
   if (strcmp (path, "nvidia_icd.json") == 0 || strcmp (path, "nvidia_icd.json.template") == 0)
     {
       archive_entry_set_pathname (entry, "./vulkan/icd.d/nvidia_icd.json");
@@ -179,6 +183,7 @@ should_extract (struct archive_entry *entry)
       return 1;
     }
 
+libs_only:
   /* Nvidia no longer has 32bit drivers so we are getting
    * the 32bit compat libs from the 64bit drivers */
   if (strcmp (ARCH, "i386") == 0 && nvidia_major_version > 390)
@@ -533,7 +538,7 @@ main (int argc, char *argv[])
       checked_symlink ("../libnvidia-allocator.so." NVIDIA_VERSION, "gbm/nvidia-drm_gbm.so");
     }
 
-  if (nvidia_major_version >= 319)
+  if (strcmp (ARCH, "i386") != 0 && nvidia_major_version >= 319)
     {
       checked_symlink ("nvidia-application-profiles-" NVIDIA_VERSION "-key-documentation",
                        "share/nvidia/nvidia-application-profiles-key-documentation");
@@ -548,13 +553,16 @@ main (int argc, char *argv[])
                        "libnvidia-tls.so." NVIDIA_VERSION);
     }
 
-  mkdir ("OpenCL", 0755);
-  mkdir ("OpenCL/vendors", 0755);
-  create_file_with_content ("OpenCL/vendors/nvidia.icd", "libnvidia-opencl.so");
+  if (strcmp (ARCH, "i386") != 0)
+    {
+      mkdir ("OpenCL", 0755);
+      mkdir ("OpenCL/vendors", 0755);
+      create_file_with_content ("OpenCL/vendors/nvidia.icd", "libnvidia-opencl.so");
 
-  if (nvidia_major_version > 340)
-    replace_string_in_file ("vulkan/icd.d/nvidia_icd.json",
-                            "__NV_VK_ICD__", "libGLX_nvidia.so.0");
+      if (nvidia_major_version > 340)
+        replace_string_in_file ("vulkan/icd.d/nvidia_icd.json",
+                                "__NV_VK_ICD__", "libGLX_nvidia.so.0");
+    }
 
   return 0;
 }