implement 1.9.12 new api - getTestCaseBugs

[lczub]

future TL release 1.9.12 will introduce a new api method getTestCaseBugs(). It returns all bugs linked to a particular testcase on a test plan.

current know arguments are (TL gitorious commit 9ca61c8)::

 /**
  * Returns all bugs linked to a particular testcase on a test plan.
  * If there are no filter criteria regarding platform and build,
  * result will be get WITHOUT checking for a particular platform and build.
  *
  * @param struct $args
  * @param string $args["devKey"]
  * @param int $args["tplanid"]
  * @param int $args["testcaseid"]: Pseudo optional.
  *                                 if does not is present then testcaseexternalid MUST BE present
  *
  * @param int $args["testcaseexternalid"]: Pseudo optional.
  *                                         if does not is present then testcaseid MUST BE present
  *
  * @param string $args["platformid"]: optional. 
  *                                    ONLY if not present, then $args["platformname"] 
  *                                    will be analized (if exists)
  *
  * @param string $args["platformname"]: optional (see $args["platformid"])
  *
  * @param int $args["buildid"]: optional
  *                              ONLY if not present, then $args["buildname"] will be analized (if exists)
  * 
  * @param int $args["buildname"] - optional (see $args["buildid"])
  *
  *
  * @return mixed $resultInfo
  *               if execution found
  *               array that contains a map with these keys:
  *               bugs
  *
  *               if test case has not been execute,
  *               array('id' => -1)
  *
  * @access public
  */
   public function getTestCaseBugs($args)