telldus-core: Fix compilation without usleep

Uses C++11's sleep_for, which internally uses nanosleep.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

utils/telldus-core/patches/930-usleep.patch

@@ -0,0 +1,40 @@
+--- a/common/common.h
++++ b/common/common.h
+@@ -25,15 +25,13 @@
+ #ifdef _WINDOWS
+ #include <fstream>  // NOLINT(readability/streams)
+ #endif
++#include <chrono>
+ #include <string>
++#include <thread>
+ #include "common/Strings.h"
+ 
+ inline void msleep( const int msec) {
+-#ifdef _WINDOWS
+-	Sleep(msec);
+-#else
+-	usleep(msec*1000);
+-#endif
++	std::this_thread::sleep_for(std::chrono::milliseconds(msec));
+ }
+ 
+ inline void dlog(const char *fmt, ...) {
+--- a/service/TellStick_libftdi.cpp
++++ b/service/TellStick_libftdi.cpp
+@@ -8,7 +8,6 @@
+ #include <string.h>
+ #include <stdlib.h>
+ #include <stdio.h>
+-#include <unistd.h>
+ #include <list>
+ #include <string>
+ 
+@@ -231,7 +230,7 @@ int TellStick::send( const std::string &strMessage ) {
+ 				return TELLSTICK_SUCCESS;
+ 			}
+ 		} else if(ret == 0) {  // No data available
+-			usleep(100);
++			std::this_thread::sleep_for(std::chrono::microseconds(100));
+ 		} else {  // Error
+ 			Log::debug("Broken pipe on read");
+ 			return TELLSTICK_ERROR_BROKEN_PIPE;