Minor function definition tweaks for C/Swift compatibility

include/libzt.h

@@ -37,7 +37,7 @@
 #include "libztDefs.h"
 
 #include <stdlib.h>
-#include <cstdint>
+#include <stdint.h>
  
 #if defined(__linux__) || defined(__APPLE__)
 #include <sys/socket.h>
@@ -99,7 +99,7 @@ ZT_SOCKET_API int ZTCALL zts_set_service_port(int portno);
  * @param nwid A 16-digit hexidecimal network identifier (e.g. Earth: `8056c2e21c000001`)
  * @return 0 if successful; or 1 if failed
  */
-ZT_SOCKET_API int ZTCALL zts_start(const char *path, bool blocking);
+ZT_SOCKET_API int ZTCALL zts_start(const char *path, int blocking);
 
 /**
  * @brief Starts libzt

src/ZT1Service.cpp

@@ -419,7 +419,7 @@ int zts_ready()
 	return zts_core_running() && zts_stack_running();
 }
 
-int zts_start(const char *path, bool blocking = false)
+int zts_start(const char *path, int blocking = false)
 {
 	if (zt1Service) {
 		return 0; // already initialized, ok