WIP: update GFileInfo to use GDateTime as timestamps
It is intended to fix issue #2281 (closed). It makes GFileInfo use GDateTime as timestamps for access and creation times of file. The following functions is added in GFileInfo g_file_info_get_access_date_time g_file_info_get_creation_date_time g_file_info_set_access_date_time g_file_info_set_creation_date_time Also tests of these functions are added to gio/tests/g-file-info.c