Wed Dec 11 20:21:22 2002 Ryuichi Tamura <r-tam@fsinet.or.jp>

	* exif.c (rb_exif_get_tag) : now need not pass hexadecimal number
	  as string object. pass it as it is.

	* exif.c (rb_exif_get_tag) : search only for tags available in 
	  libexif to improve search performance. 

	* Version 0.1.2 

Mon Nov 11 22:48:17 2002 Ryuichi Tamura <r-tam@fsinet.or.jp>

	* exif.c (rb_exif_get_tag) : return nil if return value is empty.

	* Version 0.1.1.
