fix "passing argument # of '__memcpy' discards qualifiers from pointer target type" warnings

diff -ruN linux-2.6.24-rc1.orig/fs/cifs/dir.c linux-2.6.24-rc1/fs/cifs/dir.c
@@ -585,6 +585,7 @@
 			   struct qstr *b)
 {
 	struct nls_table *codepage = CIFS_SB(dentry->d_inode->i_sb)->local_nls;
+	unsigned char *dstname = (unsigned char *)a->name;
 
 	if ((a->len == b->len) &&
 	    (nls_strnicmp(codepage, a->name, b->name, a->len) == 0)) {

@@ -593,7 +594,7 @@
 		 * case take precedence.  If a is not a negative dentry, this
 		 * should have no side effects
 		 */
-		memcpy((unsigned char *)a->name, b->name, a->len);
+		memcpy(dstname, b->name, a->len);
 		return 0;
 	}
 	return 1;

diff -ruN linux-2.6.24-rc1.orig/fs/jfs/namei.c linux-2.6.24-rc1/fs/jfs/namei.c
@@ -1580,6 +1580,7 @@
 
 static int jfs_ci_compare(struct dentry *dir, struct qstr *a, struct qstr *b)
 {
+	unsigned char *dstname = (unsigned char *)a->name;
 	int i, result = 1;
 
 	if (a->len != b->len)

@@ -1597,7 +1598,7 @@
 	 * dentry, we blindly replace it with b.  This should be harmless if
 	 * a is not a negative dentry.
 	 */
-	memcpy((unsigned char *)a->name, b->name, a->len);
+	memcpy(dstname, b->name, a->len);
 out:
 	return result;
 }

@@ -145,9 +145,10 @@
 		if (!newdent)
 			goto end_advance;
 	} else {
+		char *dstname = (char *)newdent->d_name.name;
+
 		hashed = 1;
-		memcpy((char *) newdent->d_name.name, qname->name,
-		       newdent->d_name.len);
+		memcpy(dstname, qname->name, newdent->d_name.len);
 	}
 
 	if (!newdent->d_inode) {