Patch from Vladimir:

1) fixed a bug that could crash df, mount, and umount applets if the root
    device name was longer then the word "root" (/dev/loop1 vs /dev/root) -
    2) severl functions needed static declaration in the umount applet
    3) update declaration for function in last_char_is() in libbb

libbb/chomp.c

@@ -32,7 +32,7 @@
 
 void chomp(char *s)
 {
-	char *lc = (char *)last_char_is(s, '\n');
+	char *lc = last_char_is(s, '\n');
 	
 	if(lc)
 		*lc = 0;