Add libexif to deps/third_party.

libexif/sources/libexif/canon/exif-mnote-data-canon.h

+/* exif-mnote-data-canon.h
+ *
+ * Copyright (c) 2002, 2003 Lutz Mueller <lutz@users.sourceforge.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, 
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of 
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details. 
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA  02110-1301  USA.
+ */
+
+#ifndef __EXIF_MNOTE_DATA_CANON_H__
+#define __EXIF_MNOTE_DATA_CANON_H__
+
+#include <libexif/exif-byte-order.h>
+#include <libexif/exif-mnote-data.h>
+#include <libexif/exif-mnote-data-priv.h>
+#include <libexif/exif-mem.h>
+#include <libexif/exif-data.h>
+
+typedef struct _ExifMnoteDataCanon ExifMnoteDataCanon;
+
+#include <libexif/canon/mnote-canon-entry.h>
+
+struct _ExifMnoteDataCanon {
+        ExifMnoteData parent;
+
+        MnoteCanonEntry *entries;
+        unsigned int count;
+
+        ExifByteOrder order;
+        unsigned int offset;
+
+        ExifDataOption options;
+};
+
+/*! Detect if MakerNote is recognized as one handled by the Canon module.
+ * 
+ * \param[in] ed image #ExifData to identify as as a Canon type
+ * \param[in] e #ExifEntry for EXIF_TAG_MAKER_NOTE, from within ed but
+ *   duplicated here for convenience
+ * \return 0 if not recognized, nonzero if recognized. The specific nonzero 
+ *   value returned may identify a subtype unique within this module.
+ */
+int exif_mnote_data_canon_identify (const ExifData *ed, const ExifEntry *e);
+
+ExifMnoteData *exif_mnote_data_canon_new (ExifMem *mem, ExifDataOption o);
+
+#endif /* __EXIF_MNOTE_DATA_CANON_H__ */