grub.cfg: use grub/lipinfo.cfg if available

lipinfo.cfg is most probably generated by lipck and contains
the ubuntu flavor (e.g. kubuntu), version, etc.

grub/grub.cfg

@@ -51,6 +51,17 @@ fi
 
 set gfxpayload=keep
 
+#default values
+set lip_flavor="Kubuntu"
+set lip_version="14.04"
+set lip_release="trusty"
+set lip_extra_info=""
+
+#if lipinfo.cfg exists use it to get better values for the lip_* variables.
+if [ -f /grub/lipinfo.cfg ]; then
+  source /grub/lipinfo.cfg
+fi
+
 # Start a Debian style Casper Kernel
 function LoadCasper {
 	echo	"Loading kernel-${arch} (takes up to 2 minutes)"
@@ -60,12 +71,12 @@ function LoadCasper {
 	echo 	"Starting kernel"
 }
 
-menuentry "Empfohlen: Kubuntu 14.04.1 ${bits}bit (deutsch)" {
+menuentry "Empfohlen: ${lip_flavor} ${lip_version}${lip_extra_info} ${bits}bit (deutsch)" {
 	set cmdline="debian-installer/locale=de_DE console-setup/layoutcode=de"
 	LoadCasper
 }
 
-menuentry "Empfohlen: Kubuntu 14.04.1 ${bits}bit (english)" {
+menuentry "Empfohlen: ${lip_flavor} ${lip_version}${lip_extra_info} ${bits}bit (english)" {
 	set cmdline=""
 	LoadCasper
 }
@@ -114,22 +125,22 @@ menuentry "Tool: 64bit GParted Live CD (laeuft im RAM -> mindestens 224MB)" {
   echo 	   "Starting 64 bit GParted kernel"
 }
 
-menuentry "Kubuntu 14.04.1 ${bits}bit (deutsch, failsafe)" {
+menuentry "${lip_flavor} ${lip_version}${lip_extra_info} ${bits}bit (deutsch, failsafe)" {
 	set cmdline="debian-installer/locale=de_DE console-setup/layoutcode=de nomodeset noplymouth nosplash verbose text noacpi"
 	LoadCasper
 }
 
-menuentry "Kubuntu 14.04.1 ${bits}bit (english, failsafe)" {
+menuentry "${lip_flavor} ${lip_version}${lip_extra_info} ${bits}bit (english, failsafe)" {
 	set cmdline="nomodeset noplymouth nosplash verbose text noacpi"
 	LoadCasper
 }
 
-menuentry "Kubuntu 14.04.1 ${bits}bit (deutsch, load casper from first disk)" {
+menuentry "${lip_flavor} ${lip_version}${lip_extra_info} ${bits}bit (deutsch, load casper from first disk)" {
         set cmdline="debian-installer/locale=de_DE console-setup/layoutcode=de live-media=/dev/sda1"
         LoadCasper
 }
 
-menuentry "Kubuntu 14.04.1 ${bits}bit (english, load casper from first disk)" {
+menuentry "${lip_flavor} ${lip_version}${lip_extra_info} ${bits}bit (english, load casper from first disk)" {
         set cmdline="live-media=/dev/sda1"
         LoadCasper
 }