Added TRACE_PARANOIA, which differs from cdparanoia's NOISY compile-time

flag in that it's designed to help someone understand how cdparanoia works,
rather than troubleshoot.  Setting TRACE_PARANOIA to 1 traces stage 1,
2 trace stage 2, and 3 traces both (and is extremely verbose).

Additionally, committed a tentative bugfix to paranoia itself, which was
causing the libcdio test case to break.  If it introduces unexpected
behavior, it should be backed out.  So far it seems to fix all test cases.

lib/paranoia/p_block.c

@@ -1,5 +1,5 @@
 /*
-    $Id: p_block.c,v 1.8 2005/09/20 00:42:14 rocky Exp $
+    $Id: p_block.c,v 1.9 2005/10/24 19:42:15 pjcreath Exp $
 
     Copyright (C) 2004, 2005 Rocky Bernstein <rocky@panix.com>
     Copyright (C) 1998 Monty xiphmont@mit.edu
@@ -188,6 +188,13 @@ new_v_fragment(cdrom_paranoia_t *p, c_block_t *one,
   b->size=end-begin;
   b->lastsector=last;
 
+#if TRACE_PARANOIA
+  fprintf(stderr, "- Verified [%ld-%ld] (0x%04X...0x%04X)%s\n",
+	  begin, end,
+	  b->vector[0]&0xFFFF, b->vector[b->size-1]&0xFFFF,
+	  last ? " *" : "");
+#endif
+
   return(b);
 }