wip/mat 0.6.1 NetBSD

MAT is a toolbox composed of a GUI application, a CLI application and a library, to anonymize/remove metadata.

For now, MAT fully supports the following formats:

* Portable Network Graphics (.png) * JPEG (.jpg, .jpeg, ...) * TIFF (.tif, tiff, ...) * Open Documents (.odt, .odx, .ods, ...) * Office OpenXml (.docx, .pptx, .xlsx, ...) * Portable Document Fileformat (.pdf) * Tape ARchives (.tar, .tar.bz2, ...) * MPEG AUdio (.mp3, .mp2, .mp1, ...) * Ogg Vorbis (.ogg, ...) * Free Lossless Audio Codec (.flac) * Torrent (.torrent)