Symbols defined in a doxytag file are not linked properly when
referenced from the context of a comment, though they *are*
properly linked when referenced from within normal code.  For
example, a reference like this:

/** The symbol ::Lib_variable is defined in a doxytag. */

fails with a warning:
  explicit link request to 'Lib_variable' could not be resolved

**Warning** Attached script destroys and re-creates the directory doxytag_bug.

Attached is a script that creates a complete example to demonstrate
the problem.  Note that the comment for App_function fails to
link to symbols from Lib, yet the body of App_function successfully
links to these same symbols.  Locally defined symbols are successfully
linked both in the comments and in the function body.

Operating system: Fedora 11, Ubuntu 10.10
Doxygen version: 1.7.3 release