-better memory handling
-support for thumbnails in TIFF format
-new functions exif_imagetype
@-new function exif_imagetype
@-exif_thumbnail fupports thumbnails in TIFF format and can return size
@ of thumbnail
-everything uses new data structures
-new function exif_thumbnail
#nearly stripped off all jhead code
@read_exif_data is now an alias for exif_read_data
@ important to differenciate old/new version for tests)
@new function exif_tagname returns the names of tags
@new function exif_thumbnail extracts embedded thumbnail (Marcus)
#switched to internal version 1.2
-Changed parameters after checking bugdatabase and discussion with
Rasmus: 1st=Filename, 2nd=NeededSections
# 3rd=Thumbnail, 4th=All
# 3rd and 4th parameter are currently diabled because the code
# does not work correctly (will correct this in later versions).
# Changing the parameters will not cause any problems because the
# old parameter functions never found their way in documentation
# and the they did not work...
@-Added TIFF support
@-Changed parameters after checking bugdatabase and discussion with Rasmus
@ 1st=Filename, 2nd=NeededSections
@ If the 2nd parameter is not present or 0 or '' the function will return
@ a result array even if no data was read from file.
# Personally i consider a default behaviour to generate no array if
# no data is present as a bad idea because here we can generate as
# much information as possible....
@ If the 2nd parameter is a string then that string describes which
@ sections have to be present in the file to generate a result array.
@ If none of the needed section is found the result will be false.
@ Section strings are "ANY_TAG","IFD0","COMMENT","EXIF","GPS","INTEROP"
@ "FPIX","APP12". Each string has to be separated by a colon. So
@ "COMMENT,EXIF" returns an array if either a comment or an Exif
@ section is present. "IFD0" is standard datastructure in a TIFF/JPEG
@ file that contains image information. "EXIF" is the Exif structure
@ of TIFF/JPEG (IFD0 subdirectory). "GPS", "INTEROP", "FPIX", "APP12"
@ are additional IFD0 subdirectories. The APP12 support is an
@ experimental Olympus support.
# Do not worry this is no problem, it is safe.
@(Marcus)
