[PATCH] Prototype initstate() etc. if _XOPEN_SOURCE is defined appropriately

[Jon TURNEY]

Not sure if this is wanted, but mesa likes to compile with '-std=c99
D_XOPEN_SOURCE=500', which leads to exciting crashes on x86_64 because
initstate() is not prototyped.

2013-11-13  Jon TURNEY  <jon.turney@dronecode.org.uk>

	* include/cygwin/stdlib.h(initstate, random, setstate, srandom) :
	Prototype if not __STRICT_ANSI__ or _XOPEN_SOURCE is defined appropriately.
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Index: cygwin/include/cygwin/stdlib.h
===================================================================
RCS file: /cvs/src/src/winsup/cygwin/include/cygwin/stdlib.h,v
retrieving revision 1.13
diff -u -u -p -r1.13 stdlib.h
--- cygwin/include/cygwin/stdlib.h	21 May 2013 19:04:49 -0000	1.13
+++ cygwin/include/cygwin/stdlib.h	13 Nov 2013 14:28:35 -0000
@@ -31,10 +31,14 @@ void	setprogname (const char *);
 char *realpath (const char *, char *);
 char *canonicalize_file_name (const char *);
 int unsetenv (const char *);
+#endif /*__STRICT_ANSI__*/
+#if !defined(__STRICT_ANSI__) || (_XOPEN_SOURCE >= 500) || (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED))
 char *initstate (unsigned seed, char *state, size_t size);
 long random (void);
 char *setstate (const char *state);
 void srandom (unsigned);
+#endif
+#ifndef __STRICT_ANSI__
 char *ptsname (int);
 int ptsname_r(int, char *, size_t);
 int getpt (void);