Remove the switching system in puttyps.h.

It was there because of a limitation of mkfiles.pl, which had a single
list of include directories that it used on all platforms. CMake does
not. So now there's an easier and more sensible way to have a
different header file included on Windows and Unix: call it the same
name in the two subdirectories, and rely on CMake having put the right
one of those subdirs on the include path.

putty.h

@@ -5,7 +5,7 @@
 #include <limits.h>                    /* for INT_MAX */
 
 #include "defs.h"
-#include "puttyps.h"
+#include "platform.h"
 #include "network.h"
 #include "misc.h"
 #include "marshal.h"

puttyps.h

@@ -1,18 +0,0 @@
-/*
- * Find the platform-specific header for this platform.
- */
-
-#ifndef PUTTY_PUTTYPS_H
-#define PUTTY_PUTTYPS_H
-
-#ifdef _WINDOWS
-
-#include "winstuff.h"
-
-#else
-
-#include "unix.h"
-
-#endif
-
-#endif

unix/platform.h

@@ -1,5 +1,9 @@
-#ifndef PUTTY_UNIX_H
-#define PUTTY_UNIX_H
+/*
+ * unix/platform.h: Unix-specific inter-module stuff.
+ */
+
+#ifndef PUTTY_UNIX_PLATFORM_H
+#define PUTTY_UNIX_PLATFORM_H
 
 #if HAVE_CMAKE_H
 #include "cmake.h"
@@ -457,4 +461,4 @@ bool cliloop_no_pw_setup(void *ctx, pollwrapper *pw);
 void cliloop_no_pw_check(void *ctx, pollwrapper *pw);
 bool cliloop_always_continue(void *ctx, bool, bool);
 
-#endif /* PUTTY_UNIX_H */
+#endif /* PUTTY_UNIX_PLATFORM_H */

windows/platform.h

@@ -1,9 +1,9 @@
 /*
- * winstuff.h: Windows-specific inter-module stuff.
+ * windows/platform.h: Windows-specific inter-module stuff.
  */
 
-#ifndef PUTTY_WINSTUFF_H
-#define PUTTY_WINSTUFF_H
+#ifndef PUTTY_WINDOWS_PLATFORM_H
+#define PUTTY_WINDOWS_PLATFORM_H
 
 #if HAVE_CMAKE_H
 #include "cmake.h"
@@ -708,4 +708,4 @@ void cli_main_loop(cliloop_pre_t pre, cliloop_post_t post, void *ctx);
 bool cliloop_null_pre(void *vctx, const HANDLE **, size_t *);
 bool cliloop_null_post(void *vctx, size_t);
 
-#endif
+#endif /* PUTTY_WINDOWS_PLATFORM_H */