LibC: Add struct timespec to time.h

Author: https://github.com/rburchell
Commit: 6f73a549fa
Pull-request: https://github.com/SerenityOS/serenity/pull/45
Reviewed-by: https://github.com/awesomekling

LibC/time.h

@@ -38,5 +38,11 @@ size_t strftime(char* s, size_t max, const char* format, const struct tm*);
 
 #define difftime(t1,t0) (double)(t1 - t0)
 
+// This is c++11+, but we have no macro for that now.
+struct timespec {
+    time_t tv_sec;
+    long tv_nsec;
+};
+
 __END_DECLS