feb34d4874
instead, add typedefs of only gid_t, time_t, and uid_t. o Remove an unneeded conditional that hid macros that are in the implementation namespace and therefore don't need to be hidden when _POSIX_SOURCE is defined. o Adjust some conditionals for compatibility with X/Open and POSIX. o Note missing functions getpwnam_r() and getpwuid_r().