Fix issue27146 - add stdio.h include to posixmodule.c for ctermid().

diff --cc Modules/posixmodule.c
index 92478433f83891822e38bf114955d32bc105321e,e5f58ab06b4bfcc448b540c7cffe82ce5b01bb1c..ded6d716eb2b76c3cc44bc784c2a8b890db715d2
--- 1/Modules/posixmodule.c
--- 2/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@@ -32,12 -32,8 +32,14 @@@
  #include "winreparse.h"
  #endif
  
 +/* On android API level 21, 'AT_EACCESS' is not declared although
 + * HAVE_FACCESSAT is defined. */
 +#ifdef __ANDROID__
 +#undef HAVE_FACCESSAT
 +#endif
 +
+ #include <stdio.h>  /* needed for ctermid() */
+ 
  #ifdef __cplusplus
  extern "C" {
  #endif