gh-108765: Python.h no longer includes <sys/time.h> (#108775)

Python.h no longer includes <time.h>, <sys/select.h> and <sys/time.h>
standard header files.

* Add <time.h> include to xxsubtype.c.
* Add <sys/time.h> include to posixmodule.c and semaphore.c.
* readline.c includes <sys/select.h> instead of <sys/time.h>.
* resource.c no longer includes <time.h> and <sys/time.h>.

Python/pytime.c

@@ -1,5 +1,10 @@
 #include "Python.h"
 #include "pycore_time.h"          // _PyTime_t
+
+#include <time.h>                 // gmtime_r()
+#ifdef HAVE_SYS_TIME_H
+#  include <sys/time.h>           // gettimeofday()
+#endif
 #ifdef MS_WINDOWS
 #  include <winsock2.h>           // struct timeval
 #endif