libexif: Update to version 0.6.25

libexif: Update to version 0.6.25

- Update from version 0.6.24 to 0.6.25
- Update of rootfile
- Changelog
    0.6.25
	   * REUSE compatibility (all files declare their license)
	   * Translation updates: ro, de, es, ka, pl, sr, sv, uk, vi, zh_CN,
	   * Disabled Apple Makernote support, as its not complete
	   * various bugfixes
	   * handle JPEG APP10
	   * EXIF_TAG_COMPOSITE_IMAGE, EXIF_TAG_STANDARD_OUTPUT_SENSITIVITY,
	     EXIF_TAG_RECOMMENDED_EXPOSURE_INDEX, EXIF_TAG_ISO_SPEED,
	     EXIF_TAG_ISO_SPEEDLatitudeYYY, EXIF_TAG_ISO_SPEEDLatitudeZZZ,
	     EXIF_TAG_SOURCE_IMAGE_NUMBER_OF_COMPOSITE_IMAGE,
	     EXIF_TAG_LENS_SPECIFICATION, EXIF_TAG_GAMMA, EXIF_TAG_OFFSET_TIME,
	     EXIF_TAG_OFFSET_TIME_ORIGINAL, EXIF_TAG_OFFSET_TIME_DIGITIZED,
	     EXIF_TAG_CAMERA_OWNER_NAME, EXIF_TAG_BODY_SERIAL_NUMBER,
	     EXIF_TAG_LENS_MAKE, EXIF_TAG_LENS_MODEL, EXIF_TAG_LENS_SERIAL_NUMBER:
	     better decoding

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>