6326 Eliminate unused filesystems from GRUB's stage 2 to bring back free memory

@@ -28,10 +28,10 @@
 # The version field contains the version of the associated GRUB software.  The
 # version is incremented by 1 each time there is a bugfix or enhancement to
 # GRUB necessitating that the boot blocks be reinstalled for that fix or
 # enhancement to take effect.
 #
-VERSION=26
+VERSION=27
 dboot
 xVM
 zfs
 findroot