Update the doxygen configuration file.
Minor updates/fixes to the source documentation.
diff --git a/doxygen/array_cache.doxy b/doxygen/array_cache.doxy
index 5790ec8..23296e1 100644
--- a/doxygen/array_cache.doxy
+++ b/doxygen/array_cache.doxy
@@ -40,7 +40,7 @@
#---------------------------------------------------------------------------
# Configuration::addtions related to external references
#---------------------------------------------------------------------------
-TAGFILES = core.tag=../core \
+TAGFILES = main.tag=../core \
tnl.tag=../tnl \
swrast_setup.tag=../swrast_setup \
swrast.tag=../swrast \