Update Opus to 1.0.2.

doc/Doxyfile.in

 # Doxyfile 1.7.4
 
 # This file describes the settings to be used by the documentation system
 # doxygen (www.doxygen.org) for a project.
 #
 # All text after a hash (#) is considered a comment and will be ignored.
 # The format is:
 #       TAG = value [value, ...]
 # For lists items can also be appended using:
 #       TAG += value [value, ...]
@@ skipping 817 matching lines @@
 # each generated HTML page (for example: .htm,.php,.asp). If it is left blank
 # doxygen will generate files with .html extension.
 
 HTML_FILE_EXTENSION    = .html
 
 # The HTML_HEADER tag can be used to specify a personal HTML header for
 # each generated HTML page. If it is left blank doxygen will generate a
 # standard header. Note that when using a custom header you are responsible
 # for the proper inclusion of any scripts and style sheets that doxygen
 # needs, which is dependent on the configuration options used.
-# It is adviced to generate a default header using "doxygen -w html
+# It is advised to generate a default header using "doxygen -w html
 # header.html footer.html stylesheet.css YourConfigFile" and then modify
 # that header. Note that the header is subject to change so you typically
 # have to redo this when upgrading to a newer version of doxygen or when changing the value of configuration settings such as GENERATE_TREEVIEW!
 
 HTML_HEADER            = @top_srcdir@/doc/header.html
 
 # The HTML_FOOTER tag can be used to specify a personal HTML footer for
 # each generated HTML page. If it is left blank doxygen will generate a
 # standard footer.
 
@@ skipping 866 matching lines @@
 # generate a legend page explaining the meaning of the various boxes and
 # arrows in the dot generated graphs.
 
 GENERATE_LEGEND        = YES
 
 # If the DOT_CLEANUP tag is set to YES (the default) Doxygen will
 # remove the intermediate dot files that are used to generate
 # the various graphs.
 
 DOT_CLEANUP            = YES