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Merge branch 'v1.4'
fix build error under FreeBSD 7.x.
Merge branch 'Timandes-570' into v1.4
Merge branch 'v1.4'
PHP-868: Method to check if string is a valid ObjectId
PHP-868: Make php_mongo_is_valid_id() static and use const arg
PHP-868: Check string pointer and length in php_mongo_is_valid_id()