[AD] 'None' mouse driver

[Eric Botcazou <ebotcazou@xxxxxxxxxx>]

As discovered by Grzegorz, some platforms don't allow the user to specify the 
'none' mouse driver (0 in the config file).  These are: BeOS, QNX, MacOS X 
and Unix.

Any particular reason not to accept it on these platforms too?

I've attached a patch.

-- 
Eric Botcazou

diff -urp /home/eric/cvs/allegro/src/beos/bmousdrv.c allegro/src/beos/bmousdrv.c
--- /home/eric/cvs/allegro/src/beos/bmousdrv.c	Tue Nov  6 16:30:46 2001
+++ allegro/src/beos/bmousdrv.c	Sat May 15 11:25:45 2004
@@ -27,6 +27,6 @@
 _DRIVER_INFO _mouse_driver_list[] =
 {
    {MOUSE_BEOS,    &mouse_beos,    TRUE},
-//   {MOUSEDRV_NONE, &mousedrv_none, TRUE},
+   {MOUSEDRV_NONE, &mousedrv_none, TRUE},
    {0, NULL, 0}	 
 };
diff -urp /home/eric/cvs/allegro/src/macosx/drivers.m allegro/src/macosx/drivers.m
--- /home/eric/cvs/allegro/src/macosx/drivers.m	Thu Oct 23 07:53:13 2003
+++ allegro/src/macosx/drivers.m	Sat May 15 11:26:04 2004
@@ -42,6 +42,7 @@ _DRIVER_INFO _timer_driver_list[] =
 _DRIVER_INFO _mouse_driver_list[] =
 {
    { MOUSE_MACOSX,            &mouse_macosx,            TRUE  },
+   { MOUSEDRV_NONE,           &mousedrv_none,           TRUE  },
    { 0,                       NULL,                     0     }
 };
 
diff -urp /home/eric/cvs/allegro/src/qnx/qdrivers.c allegro/src/qnx/qdrivers.c
--- /home/eric/cvs/allegro/src/qnx/qdrivers.c	Sat May  4 00:34:13 2002
+++ allegro/src/qnx/qdrivers.c	Sat May 15 11:26:26 2004
@@ -42,6 +42,7 @@ _DRIVER_INFO _timer_driver_list[] =
 _DRIVER_INFO _mouse_driver_list[] =
 {
    { MOUSE_QNX,         &mouse_qnx,         TRUE  },
+   { MOUSEDRV_NONE,     &mousedrv_none,     TRUE  },
    { 0,                 NULL,               0     }
 };
 
diff -urp /home/eric/cvs/allegro/src/unix/umouse.c allegro/src/unix/umouse.c
--- /home/eric/cvs/allegro/src/unix/umouse.c	Sun May 14 22:17:20 2000
+++ allegro/src/unix/umouse.c	Sat May 15 11:27:30 2004
@@ -23,6 +23,7 @@
 /* list the available drivers */
 _DRIVER_INFO _mouse_driver_list[] =
 {
-   {  0,  NULL,  0  }
+   {  MOUSEDRV_NONE, &mousedrv_none, TRUE  },
+   {  0,             NULL,           0  }
 };
 
diff -urp /home/eric/cvs/allegro/src/x/xmouse.c allegro/src/x/xmouse.c
--- /home/eric/cvs/allegro/src/x/xmouse.c	Mon Jul  7 16:58:32 2003
+++ allegro/src/x/xmouse.c	Sat May 15 11:27:19 2004
@@ -72,8 +72,9 @@ static MOUSE_DRIVER mouse_xwin =
 /* list the available drivers */
 _DRIVER_INFO _xwin_mouse_driver_list[] =
 {
-   {  MOUSE_XWINDOWS, &mouse_xwin, TRUE  },
-   {  0,              NULL,        0     }
+   {  MOUSE_XWINDOWS, &mouse_xwin,    TRUE  },
+   {  MOUSEDRV_NONE,  &mousedrv_none, TRUE  },
+   {  0,              NULL,           0     }
 };