TestProperties#test_pack_VT_FILETIME : Bug fix.

  use Time.gm not to fail due to different timezone.
TestProperties#test_create_summary_property_set : Bug fix.

  use Time.gm not to fail due to defferent timezone.
TC_example_match#test_properties : Buf fix.

  set @localtime JST localtime not to fail due to different timezone.