mkarchiso: do not place memtest86+ in netboot artifacts

Move memtest86+ to `/boot/memtest86+/` on ISO 9660. That directory is
not copied to netboot artifact output.

Netboot boot menu https://ipxe.archlinux.org/releng/netboot/archlinux.ipxe
does not have entries for memtest and archiso-manager removes these files
(not the EFI one, though) before uploading the release files anyway.

CHANGELOG.rst

@@ -23,6 +23,8 @@ Changed
 Removed
 -------
 
+- Do not place memtest86+ in netboot artifacts.
+
 [69] - 2022-12-24
 =================
 

archiso/mkarchiso

@@ -471,11 +471,10 @@ _make_bootmode_bios.syslinux.mbr() {
 
     # Add other aditional/extra files to ${install_dir}/boot/
     if [[ -e "${pacstrap_dir}/boot/memtest86+/memtest.bin" ]]; then
+        install -d -m 0755 -- "${isofs_dir}/boot/memtest86+/"
         # rename for PXE: https://wiki.archlinux.org/title/Syslinux#Using_memtest
-        install -m 0644 -- "${pacstrap_dir}/boot/memtest86+/memtest.bin" "${isofs_dir}/${install_dir}/boot/memtest"
-        install -d -m 0755 -- "${isofs_dir}/${install_dir}/boot/licenses/memtest86+/"
-        install -m 0644 -- "${pacstrap_dir}/usr/share/licenses/common/GPL2/license.txt" \
-            "${isofs_dir}/${install_dir}/boot/licenses/memtest86+/"
+        install -m 0644 -- "${pacstrap_dir}/boot/memtest86+/memtest.bin" "${isofs_dir}/boot/memtest86+/memtest"
+        install -m 0644 -- "${pacstrap_dir}/usr/share/licenses/common/GPL2/license.txt" "${isofs_dir}/boot/memtest86+/"
     fi
     _msg_info "Done! SYSLINUX set up for BIOS booting from a disk successfully."
 }
@@ -722,10 +721,9 @@ _make_bootmode_uefi-x64.grub.esp() {
 
     # Add other aditional/extra files to ${install_dir}/boot/
     if [[ -e "${pacstrap_dir}/boot/memtest86+/memtest.efi" ]]; then
-        install -m 0644 -- "${pacstrap_dir}/boot/memtest86+/memtest.efi" "${isofs_dir}/${install_dir}/boot/memtest.efi"
-        install -d -m 0755 -- "${isofs_dir}/${install_dir}/boot/licenses/memtest86+/"
-        install -m 0644 -- "${pacstrap_dir}/usr/share/licenses/common/GPL2/license.txt" \
-            "${isofs_dir}/${install_dir}/boot/licenses/memtest86+/"
+        install -d -m 0755 -- "${isofs_dir}/boot/memtest86+/"
+        install -m 0644 -- "${pacstrap_dir}/boot/memtest86+/memtest.efi" "${isofs_dir}/boot/memtest86+/memtest.efi"
+        install -m 0644 -- "${pacstrap_dir}/usr/share/licenses/common/GPL2/license.txt" "${isofs_dir}/boot/memtest86+/"
     fi
 
     _msg_info "Done! GRUB set up for UEFI booting successfully."

configs/releng/grub/grub.cfg

@@ -55,7 +55,7 @@ if [ "${grub_platform}" == "efi" ]; then
     if [ "${grub_cpu}" == "x86_64" ]; then
         menuentry "Run Memtest86+ (RAM test)" --class memtest86 --class gnu --class tool {
             set gfxpayload=800x600,1024x768
-            linux /%INSTALL_DIR%/boot/memtest.efi
+            linux /boot/memtest86+/memtest.efi
         }
         menuentry "UEFI Shell" {
             insmod chain

configs/releng/syslinux/archiso_tail.cfg

@@ -10,7 +10,7 @@ APPEND hd0 0
 # https://www.memtest.org/
 LABEL memtest
 MENU LABEL Run Memtest86+ (RAM test)
-LINUX /%INSTALL_DIR%/boot/memtest
+LINUX /boot/memtest86+/memtest
 
 # https://wiki.syslinux.org/wiki/index.php/Hdt_(Hardware_Detection_Tool)
 LABEL hdt