re PR testsuite/28870 (configuring, over-riding timeout values in testsuite)

re PR testsuite/28870 (configuring, over-riding timeout values in testsuite)

	PR testsuite/28870
	* testsuite/27_io/basic_stringbuf/overflow/char/1.cc: Use only
	10000 iterations for simulator targets.
	* testsuite/ext/pb_ds/regression/tree_data_map_rand.cc: Use only 5
	iterations for simulator targets.
	* testsuite/ext/pb_ds/regression/tree_no_data_map_rand.cc: Ditto.
	* testsuite/ext/pb_ds/regression/trie_data_map_rand.cc: Ditto.
	* testsuite/ext/pb_ds/regression/trie_no_data_map_rand.cc: Ditto.
	* testsuite/ext/pb_ds/regression/hash_no_data_map_rand.cc: Ditto.
	* testsuite/ext/pb_ds/regression/hash_data_map_rand.cc: Ditto.
	* testsuite/ext/pb_ds/regression/priority_queue_rand.cc: Ditto.
	* testsuite/23_containers/set/modifiers/16728.cc: Use only 10
	iterations for simulator targets.

From-SVN: r121684