Change copy_file() function to try to create a hard link instead
of copying...

Submitted to author:

	http://www.epmhome.org/str.php?L21+P0+S-2+C0+I0+E0+M10+Q

	-mi

--- file.c	2006-08-29 12:43:09.000000000 -0400
+++ file.c	2009-11-16 19:49:06.242283000 -0500
@@ -67,4 +67,17 @@
 
   unlink(dst);
+  if (link(src, dst) == 0)
+  {
+    if (Verbosity > 1)
+       printf("Successfully linked %s to %s instead of copying\n",
+              src, dst);
+    return 0;
+  }
+  else
+  {
+    if (Verbosity > 1)
+       printf("Linking %s to %s failed: %s.\n\tFalling back to copying\n",
+              src, dst, strerror(errno));
+  }
 
   if ((dstfile = fopen(dst, "wb")) == NULL)