A patch to eliminate warnings on casts

[Mai, Haohui]

Hi,

Here is a patch to eliminate some warnings on const casts. Thanks.

Cheers,
Haohui

Index: l4/message.h
===================================================================
--- l4/message.h	(revision 1117)
+++ l4/message.h	(working copy)
@@ -990,7 +990,7 @@
 L4_INLINE void L4_AcceptStrings (const L4_Acceptor_t a,
 				 const L4_MsgBuffer_t * b)
 {
-    L4_StringItem_t *prev, *t, *s = (L4_StringItem_t *) &b->string[0];
+    const L4_StringItem_t *prev, *t, *s = (const L4_StringItem_t *) &b->string[0];
     int n, i = 1;
 
     L4_LoadBR (0, a.raw);
@@ -999,7 +999,7 @@
 	do {
 	    t = s;
 	    n = s->X.j + 2;
-	    s = (L4_StringItem_t *) &s->X.str.substring_ptr[n-1];
+	    s = (const L4_StringItem_t *) &s->X.str.substring_ptr[n-1];
 	    L4_LoadBRs (i, n, (L4_Word_t *) t);
 	    i += n;
 	} while (t->X.c);
Index: l4/powerpc/vregs.h
===================================================================
--- l4/powerpc/vregs.h	(revision 1717)
+++ l4/powerpc/vregs.h	(working copy)
@@ -258,7 +258,7 @@
 	*w++ = *br--;
 }
 
-L4_INLINE void L4_LoadBRs( int i, int k, L4_Word_t * w )
+L4_INLINE void L4_LoadBRs( int i, int k, const L4_Word_t * w )
 {
     L4_Word_t * br = (__L4_PPC_Utcb()) - 16 - i;
 
Index: l4/powerpc64/vregs.h
===================================================================
--- l4/powerpc64/vregs.h	(revision 1717)
+++ l4/powerpc64/vregs.h	(working copy)
@@ -262,7 +262,7 @@
 	*w++ = *br++;
 }
 
-L4_INLINE void L4_LoadBRs( int i, int k, L4_Word_t * w )
+L4_INLINE void L4_LoadBRs( int i, int k, const L4_Word_t * w )
 {
     L4_Word_t * br = &(__L4_PPC64_Utcb())[__L4_TCR_BR_OFFSET +  i];
 
Index: l4/ia32/vregs.h
===================================================================
--- l4/ia32/vregs.h	(revision 1717)
+++ l4/ia32/vregs.h	(working copy)
@@ -301,7 +301,7 @@
 	*w++ = *br--;
 }
 
-L4_INLINE void L4_LoadBRs (int i, int k, L4_Word_t * w)
+L4_INLINE void L4_LoadBRs (int i, int k, const L4_Word_t * w)
 {
     L4_Word_t * br = (__L4_X86_Utcb ()) - 16 - i;
 
Index: l4/amd64/vregs.h
===================================================================
--- l4/amd64/vregs.h	(revision 1717)
+++ l4/amd64/vregs.h	(working copy)
@@ -311,7 +311,7 @@
 	*w++ = *br--;
 }
 
-L4_INLINE void L4_LoadBRs (int i, int k, L4_Word_t * w)
+L4_INLINE void L4_LoadBRs (int i, int k, const L4_Word_t * w)
 {
     L4_Word_t * br = (__L4_X86_Utcb ()) - 16 - i;