This patch fixes vendor SDK header "c_types.h" for C99 compatibility.

--- esp_iot_sdk_v0.9.4.org/include/c_types.h.orig	2015-08-07 19:56:56.000000000 +0300
+++ esp_iot_sdk_v0.9.4.org/include/c_types.h	2015-12-30 02:23:54.605439011 +0200
@@ -6,17 +6,19 @@
 #ifndef _C_TYPES_H_
 #define _C_TYPES_H_
 
-typedef unsigned char       uint8_t;
+#include <stdint.h>
+#include <stdbool.h>
+//typedef unsigned char       uint8_t;
 typedef signed char         sint8_t;
-typedef signed char         int8_t;
-typedef unsigned short      uint16_t;
+//typedef signed char         int8_t;
+//typedef unsigned short      uint16_t;
 typedef signed short        sint16_t;
-typedef signed short        int16_t;
-typedef unsigned long       uint32_t;
+//typedef signed short        int16_t;
+//typedef unsigned long       uint32_t;
 typedef signed long         sint32_t;
-typedef signed long         int32_t;
+//typedef signed long         int32_t;
 typedef signed long long    sint64_t;
-typedef unsigned long long  uint64_t;
+//typedef unsigned long long  uint64_t;
 typedef unsigned long long  u_int64_t;
 typedef float               real32_t;
 typedef double              real64_t;
@@ -80,10 +82,10 @@
 #endif /* ICACHE_FLASH */
 
 #ifndef __cplusplus
-typedef unsigned char   bool;
+//typedef unsigned char   bool;
 #define BOOL            bool
-#define true            (1)
-#define false           (0)
+//#define true            (1)
+//#define false           (0)
 #define TRUE            true
 #define FALSE           false