Enable WinCE build without deceiving _MSC_VER.

Reviewed-by: Mark J. Cox <mark@awe.com>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11526)

crypto/o_str.c

@@ -287,7 +287,7 @@ char *OPENSSL_buf2hexstr(const unsigned char *buf, long buflen)
 
 int openssl_strerror_r(int errnum, char *buf, size_t buflen)
 {
-#if defined(_MSC_VER) && _MSC_VER>=1400
+#if defined(_MSC_VER) && _MSC_VER>=1400 && !defined(_WIN32_WCE)
     return !strerror_s(buf, buflen, errnum);
 #elif defined(_GNU_SOURCE)
     char *err;

crypto/o_time.c

@@ -41,7 +41,7 @@ struct tm *OPENSSL_gmtime(const time_t *timer, struct tm *result)
     if (gmtime_r(timer, result) == NULL)
         return NULL;
     ts = result;
-#elif defined (OPENSSL_SYS_WINDOWS) && defined(_MSC_VER) && _MSC_VER >= 1400
+#elif defined (OPENSSL_SYS_WINDOWS) && defined(_MSC_VER) && _MSC_VER >= 1400 && !defined(_WIN32_WCE)
     if (gmtime_s(result, timer))
         return NULL;
     ts = result;

crypto/rand/randfile.c

@@ -26,7 +26,7 @@
 #ifndef OPENSSL_NO_POSIX_IO
 # include <sys/stat.h>
 # include <fcntl.h>
-# ifdef _WIN32
+# if defined(_WIN32) && !defined(_WIN32_WCE)
 #  include <windows.h>
 #  include <io.h>
 #  define stat    _stat

e_os.h

@@ -258,7 +258,7 @@ extern FILE *_imp___iob;
 # if defined(OPENSSL_SYS_WINDOWS)
 #  define strcasecmp _stricmp
 #  define strncasecmp _strnicmp
-#  if (_MSC_VER >= 1310)
+#  if (_MSC_VER >= 1310) && !defined(_WIN32_WCE)
 #   define open _open
 #   define fdopen _fdopen
 #   define close _close

include/openssl/e_os2.h

@@ -220,7 +220,7 @@ typedef UINT64 uint64_t;
 #  undef OPENSSL_NO_INTTYPES_H
 /* Because the specs say that inttypes.h includes stdint.h if present */
 #  undef OPENSSL_NO_STDINT_H
-# elif defined(_MSC_VER) && _MSC_VER<=1500
+# elif defined(_MSC_VER) && _MSC_VER<1600
 /*
  * minimally required typdefs for systems not supporting inttypes.h or
  * stdint.h: currently just older VC++