Create doxygen bibliography with CIP spec documents.

Intended for use with future @cite doxygen commands.

source/doc/opener.bib

@@ -0,0 +1,18 @@
+@book{CipVol1,
+series = "The CIP Networks Library",
+title = "Common {I}ndustrial {P}rotocol",
+volume = "1",
+edition = "3.3",
+month = "November",
+year = "2007"
+}
+
+
+@book{CipVol2,
+series = "The CIP Networks Library",
+title = "Ether{N}et/{IP} {A}daptation of {CIP}",
+volume = "2",
+edition = "1.4",
+month = "November",
+year = "2007"
+}

source/opener.doxyfile.in

@@ -687,7 +687,7 @@ LAYOUT_FILE            =
 # LATEX_BIB_STYLE. To use this feature you need bibtex and perl available in the
 # search path. See also \cite for info how to create references.
 
-CITE_BIB_FILES         = 
+CITE_BIB_FILES         = @OpENer_SOURCE_DIR@/doc/opener.bib
 
 #---------------------------------------------------------------------------
 # Configuration options related to warning and progress messages