move struct timeval to missing.h

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2873 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

missing.h

@@ -1,6 +1,7 @@
 /************************************************
 
-  missing.h - prototype for *.c in ./missing
+  missing.h - prototype for *.c in ./missing, and
+  	      for missing timeval struct
 
   $Author$
   $Date$
@@ -11,6 +12,16 @@
 #ifndef MISSING_H
 #define MISSING_H
 
+#if defined(HAVE_SYS_TIME_H)
+#  include <sys/time.h>
+#elif !defined(NT)
+#  define time_t long
+struct timeval {
+    time_t tv_sec;	/* seconds */
+    time_t tv_usec;	/* microseconds */
+};
+#endif
+
 #ifndef HAVE_ACOSH
 extern double acosh _((double));
 extern double asinh _((double));