Log Message:
Update to 1.5:

GTK-Doc 1.5     (Mar 7 2006)
===========

 o Output the new version of devhelp2 information, but still generate the old
   devhelp files so older versions of DevHelp still work OK.
 o Fixed the initial creation of the *-sections.txt file so the object
   hierarchy, signals and properties all work automatically.
 o Show information about signal flags (run first/last).
 o Support a --source-suffixes argument specifying which source files to scan.
 o Support other root object types besides GObject and GInterface.
 o Use a fixed navigation bar for the generated documentation.
 o New documentation from Stefan Kost.
 o Handle more variations of C syntax.