require libuuid

- require libuuid at build time and remove insufficiently seeded
  replacement for uuid()

src/util.cpp

@@ -230,8 +230,6 @@ int autoComplete (
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-#ifdef HAVE_UUID
-
 #ifndef HAVE_UUID_UNPARSE_LOWER
 // Older versions of libuuid don't have uuid_unparse_lower(), only uuid_unparse()
 void uuid_unparse_lower (uuid_t uu, char *out)
@@ -256,33 +254,6 @@ const std::string uuid ()
   return std::string (buffer);
 }
 
-////////////////////////////////////////////////////////////////////////////////
-#else
-
-#ifdef HAVE_RANDOM
-#define rand() random()
-#endif
-
-////////////////////////////////////////////////////////////////////////////////
-const std::string uuid ()
-{
-  uint32_t time_low = ((rand () << 16) & 0xffff0000) | (rand () & 0xffff);
-  uint16_t time_mid = rand () & 0xffff;
-  uint16_t time_high_and_version = (rand () & 0x0fff) | 0x4000;
-  uint16_t clock_seq = (rand () & 0x3fff) | 0x8000;
-  uint8_t node [6];
-  for (size_t i = 0; i < 6; i++)
-    node[i] = rand() & 0xff;
-
-  char buffer[37];
-  sprintf(buffer, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
-    time_low, time_mid, time_high_and_version, clock_seq >> 8, clock_seq & 0xff,
-    node[0], node[1], node[2], node[3], node[4], node[5]);
-
-  return std::string (buffer);
-}
-#endif
-
 ////////////////////////////////////////////////////////////////////////////////
 // On Solaris no flock function exists.
 #ifdef SOLARIS