Fix `grub-menu-builder.sh'.

Previously, since `nullglob' is active, `$(ls /boot/kernels/*)'
would translate into `$(ls)' when `/boot/kernels' is empty, which
would then lead to the removal of all the files under $PWD.

Additionally, if `/boot/kernels' was not empty, `$fn' would contain
only the basename of the files, whereas `$filesCopied' is indexed
by full paths.


svn path=/nixos/trunk/; revision=15548

installer/grub-menu-builder.sh

@@ -15,7 +15,7 @@ bootMount="@bootMount@"
 if test -z "$bootMount"; then bootMount=/boot; fi
 
 
-echo "updating the Grub menu..."
+echo "updating the GRUB menu..."
 
 
 target=/boot/grub/menu.lst
@@ -176,7 +176,7 @@ mv $tmp $target
 
 
 # Remove obsolete files from /boot/kernels.
-for fn in $(ls /boot/kernels/*); do
+for fn in /boot/kernels/*; do
     if ! test "${filesCopied[$fn]}" = 1; then
         rm -vf -- "$fn"
     fi