Merge pull request #229 from rahul-bedarkar/fix-build-with-glibc

tests: define __STDC_LIMIT_MACROS

tests/iodelay.cpp

@@ -20,6 +20,7 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+#define __STDC_LIMIT_MACROS
 #include <stdint.h>
 #include <math.h>
 #include <unistd.h>