Changes
- add ZipArchive::FL_RECOMPRESS, FL_ENCRYPTED, FL_OVERWRITE, FL_LOCAL,
FL_CENTRAL constants
- add optional "flags" parameter to ZipArchive::addEmptyDir, addFile and
addFromString methods
- add "flags" options to ZipArchive::addGlob and addPattern methods,
keeping previous behavior having FL_OVERWRITE by default
- add ZipArchive::replaceFile() method
- add lastId property to ZipArchive