Added testFileDescriptorUsage_WriteIntoArchive, to stress-test file writing, making sure no file descriptors leak
Added testFileDescriptorUsage_WriteIntoArchive, to stress-test file writing, making sure no file descriptors leak

abbeycode/UnzipKit,abbeycode/UnzipKit,abbeycode/UnzipKit,abbeycode/UnzipKit,abbeycode/UnzipKit