Revert "Drop graphical install boot mode, kinda useless"

This reverts commit f551f04612.

boot/core/boot/grub/grub.cfg

@@ -63,6 +63,15 @@ menuentry "Start Sabayon __VERSION__ SpinBase" {
    initrd /boot/sabayon.igz
 }
 
+menuentry "Installation" {
+   set gfxpayload=keep
+   echo "Language: ${bootlang}"
+   echo "Keyboard: ${bootkeymap}"
+   echo "Please wait..."
+   linux /boot/sabayon overlayfs cdroot ${init_opt} splash quiet installer-text vconsole.keymap=${bootkeymap} locale=${bootlang} ${modeset_opt} ${acpi_opt} --
+   initrd /boot/sabayon.igz
+}
+
 submenu "Advanced Options" {
 
    menuentry "Check disc for defects" {

remaster/minimal_grub.cfg

@@ -72,6 +72,16 @@ menuentry "Installation" {
    initrd /boot/sabayon.igz
 }
 
+menuentry "Installation" {
+   set gfxpayload=keep
+   echo "Language: ${bootlang}"
+   echo "Keyboard: ${bootkeymap}"
+   echo "Please wait..."
+   linux /boot/sabayon overlayfs cdroot splash quiet vconsole.keymap=${bootkeymap} systemd.unit=multi-user.target installer-gui locale=${bootlang} ${modeset_opt} ${acpi_opt} --
+   initrd /boot/sabayon.igz
+}
+
+
 submenu "Advanced Options" {
 
    menuentry "Console mode" {

remaster/minimal_isolinux.cfg

@@ -10,6 +10,11 @@ label install
   kernel /boot/sabayon
   append initrd=/boot/sabayon.igz overlayfs cdroot splash systemd.unit=multi-user.target installer-text quiet --
 
+label install
+  menu label ^Installation
+  kernel /boot/sabayon
+  append initrd=/boot/sabayon.igz overlayfs cdroot splash vga=791 systemd.unit=multi-user.target installer-gui quiet --
+
 label genuine
   menu label Safe ^Mode
   kernel /boot/sabayon

remaster/standard_grub.cfg

@@ -72,6 +72,15 @@ menuentry "Installation" {
    initrd /boot/sabayon.igz
 }
 
+menuentry "Installation" {
+   set gfxpayload=keep
+   echo "Language: ${bootlang}"
+   echo "Keyboard: ${bootkeymap}"
+   echo "Please wait..."
+   linux /boot/sabayon overlayfs cdroot splash quiet vconsole.keymap=${bootkeymap} systemd.unit=multi-user.target installer-gui locale=${bootlang} ${modeset_opt} ${acpi_opt} --
+   initrd /boot/sabayon.igz
+}
+
 submenu "Advanced Options" {
 
    menuentry "Console mode" {

remaster/standard_isolinux.cfg

@@ -10,6 +10,11 @@ label install
   kernel /boot/sabayon
   append initrd=/boot/sabayon.igz overlayfs cdroot splash quiet systemd.unit=multi-user.target installer-text --
 
+label install
+  menu label ^Installation
+  kernel /boot/sabayon
+  append initrd=/boot/sabayon.igz overlayfs cdroot splash vga=791 quiet systemd.unit=multi-user.target installer-gui --
+
 label genuine
   menu label Safe ^Mode
   kernel /boot/sabayon