Fix kvs1024 compiling on platforms without libusb

Removed direct include of usb.h in backend since it
should be using sanei_usb.  Completed prototype
of sane_exit(void) for some versions of gcc that are
strict about that.

Signed-off-by: Chris Bagwell <chris@cnpbagwell.com>

ChangeLog

@@ -1,3 +1,8 @@
+2010-04-02 Chris Bagwell <chris at cnpbagwell dot com>
+	* backend/kvs1024*: Remove includes of usb.h
+	directly into backend.  Complete prototype
+	for sane_exit().
+
 2010-04-02 Chris Bagwell <chris at cnpbagwell dot com>
 	* po/Makefile.am: Remove unneeded distclean-local target.
 

backend/kvs1025.c

@@ -21,8 +21,6 @@
 #include <sys/wait.h>
 #include <unistd.h>
 
-#include <usb.h>
-
 #include "../include/sane/sane.h"
 #include "../include/sane/saneopts.h"
 #include "../include/sane/sanei.h"
@@ -73,7 +71,7 @@ sane_init (SANE_Int * version_code,
 
 /* Terminate the KV-S1025 SANE backend */
 void
-sane_exit ()
+sane_exit (void)
 {
   DBG (DBG_proc, "sane_exit: enter\n");
 

backend/kvs1025_low.c

@@ -20,8 +20,6 @@
 #include <sys/wait.h>
 #include <unistd.h>
 
-#include <usb.h>
-
 #include "../include/sane/sane.h"
 #include "../include/sane/saneopts.h"
 #include "../include/sane/sanei.h"

backend/kvs1025_opt.c

@@ -20,8 +20,6 @@
 #include <sys/wait.h>
 #include <unistd.h>
 
-#include <usb.h>
-
 #include "../include/sane/sane.h"
 #include "../include/sane/saneopts.h"
 #include "../include/sane/sanei.h"