* Do not optimize doxygen for C

doc/doxygen.cfg.in

@@ -186,7 +186,7 @@ ALIASES                =
 # For instance, some of the names that are used will be different. The list
 # of all members will be omitted, etc.
 
-OPTIMIZE_OUTPUT_FOR_C  = YES
+OPTIMIZE_OUTPUT_FOR_C  = NO
 
 # Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java
 # sources only. Doxygen will then generate output that is more tailored for