there seems to either be a bug in the latex output from doxygen or a …

…bug in latex in parsing what look like perfectly valid label names. either way, the doc generation is failing on at least some linux systems and will succeed correctly if PDF_HYPERLINKS are enabled (which are awesome to have regardless). bug was reported by geoff sauerborn of ARL.

docs/doxygen.cfg.in

@@ -899,7 +899,7 @@ LATEX_HEADER           =
 # contain links (just like the HTML output) instead of page references 
 # This makes the output suitable for online browsing using a pdf viewer.
 
-PDF_HYPERLINKS         = NO
+PDF_HYPERLINKS         = YES
 
 # If the USE_PDFLATEX tag is set to YES, pdflatex will be used instead of 
 # plain latex in the generated Makefile. Set this option to YES to get a