Make sha2 compile on windows

3rdparty/sha2/sha2.c

@@ -84,6 +84,10 @@
  * <machine/endian.h> where the appropriate definitions are actually
  * made).
  */
+#ifdef __MINGW32__
+#include <sys/param.h>
+#endif
+
 #if !defined(BYTE_ORDER) || (BYTE_ORDER != LITTLE_ENDIAN && BYTE_ORDER != BIG_ENDIAN)
 #error Define BYTE_ORDER to be equal to either LITTLE_ENDIAN or BIG_ENDIAN
 #endif

3rdparty/sha2/sha2.h

@@ -71,7 +71,7 @@ extern "C" {
  * uintXX_t (from inttypes.h), you may need to define things by hand
  * for your system:
  */
-#if 0
+#ifdef __MINGW32__
 typedef unsigned char u_int8_t;		/* 1-byte  (8-bits)  */
 typedef unsigned int u_int32_t;		/* 4-bytes (32-bits) */
 typedef unsigned long long u_int64_t;	/* 8-bytes (64-bits) */