lguest and virtio: cleanup struct definitions to Linux style.

I've been doing this for years, and akpm picked me up on it about 12
months ago.  lguest partly serves as example code, so let's do it Right.

Also, remove two unused fields in struct vblk_info in the example launcher.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Ingo Molnar <mingo@redhat.com>
diff --git a/include/linux/lguest.h b/include/linux/lguest.h
index 0a3a11a..2fb1dcb 100644
--- a/include/linux/lguest.h
+++ b/include/linux/lguest.h
@@ -18,8 +18,7 @@
  * lguest_data".  Once the Guest's initialization hypercall tells the Host where
  * this is, the Guest and Host both publish information in it.
 :*/
-struct lguest_data
-{
+struct lguest_data {
 	/*
 	 * 512 == enabled (same as eflags in normal hardware).  The Guest
 	 * changes interrupts so often that a hypercall is too slow.