More Windows fixes

src/libmdb/fakeglib.c

@@ -1,7 +1,6 @@
 
 #include "mdbfakeglib.h"
 
-#include <string.h>
 #include <stddef.h>
 #include <stdlib.h>
 #include <stdarg.h>

src/libmdb/iconv.c

@@ -23,6 +23,10 @@
 #include "dmalloc.h"
 #endif
 
+#ifndef MIN
+#define MIN(a,b) (a>b ? b : a)
+#endif
+
 /*
  * This function is used in reading text data from an MDB table.
  */