* Bug 16143 fixed: clc(n) cleared n+1 lines instead of n>0

* Bug 16143 fixed: clc(n) cleared n+1 lines instead of n>0
* Bug 14642 fized: no more "\r" carriage return with printf

  http://bugzilla.scilab.org/16143
  http://bugzilla.scilab.org/14642

  Test 1:
  // Test 1
  mode(0)
  mode(0)
  mode(0)
  clc(1)
should leave
--> // Test 1
--> mode(0)
--> mode(0)
-->

  Test 2:
  // Test 2
  printf("\ntoto, \r titi");
should leave
--> // Test 2
--> printf("\ntoto, \r titi");

 titi

Change-Id: I732698f754c07f94efb5a48c3130f7e53e5e8e71