skip test on travis due to frequency of timeout failures

Author: ashnazg

System.php

@@ -315,7 +315,7 @@ public static function mkDir($args)
      * 2) System::cat('sample.txt test.txt > final.txt');
      * 3) System::cat('sample.txt test.txt >> final.txt');
      *
-     * Note: as the class use fopen, urls should work also (test that)
+     * Note: as the class use fopen, urls should work also
      *
      * @param    string  $args   the arguments
      * @return   boolean true on success

tests/System/test_online.phpt

@@ -2,6 +2,10 @@
 System commands tests
 --SKIPIF--
 <?php
+if (getenv('TRAVIS')) {
+    // this test is a frequent false failure on Travis CI due to RunTests timing it out
+    echo 'skip ';
+}
 if (!getenv('PHP_PEAR_RUNTESTS')) {
     echo 'skip ';
 }