port perfnotes to windows. addresses #1246

git-svn-id: file:///svn/toku/tokudb.1032b@8054 c7de825b-a66e-492c-adef-691d508d4ae1

windows/tests/test-gettimeofday.c

+#include <stdio.h>
+#include <assert.h>
+#include <toku_time.h>
+
+int main(void) {
+    int r;
+    struct timeval tv;
+    struct timezone tz;
+
+    r = gettimeofday(&tv, 0);
+    assert(r == 0);
+    
+    return 0;
+}

windows/toku_time.h

 #ifndef TOKU_TIME_H
 #define TOKU_TIME_H
 
+#include <windows.h>
 #include <time.h>
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+struct timezone {
+    int tz_minuteswest;
+    int tz_dsttime;
+};
+
 int gettimeofday(struct timeval *tv, struct timezone *tz);
 
 #ifdef __cplusplus