CDRIVER-1032: Fix Windows build

Author: bjori

src/mongoc/mongoc-host-list.c

@@ -15,6 +15,8 @@
  */
 
 #include "mongoc-host-list-private.h"
+/* strcasecmp on windows */
+#include "mongoc-util-private.h"
 
 
 /*

src/mongoc/mongoc-uri.c

@@ -21,6 +21,9 @@
 #include <sys/types.h>
 #include <math.h>
 
+/* strcasecmp on windows */
+#include "mongoc-util-private.h"
+
 #include "mongoc-host-list.h"
 #include "mongoc-host-list-private.h"
 #include "mongoc-log.h"