pre-cc?

Hi!

I've been playing with various compiler flags, and ended up getting a  
compilation error in a .pre-cc file.
Google suggests this is "PREttier Compiler-Compiler", which doesn't  
make me much wiser.

So, please teach me! What's the deal with the files with a "pre-cc"- 
suffix?

Also, I edited the file that caused the compilation problem, but it  
seems like it's not using my changes when I recompile, as I get the  
same error again. Some kind of caching in effect, I suspect, but a  
"make distclean" didn't solve anything...
What am I missing?


/Jonas

ps:
I found some obviously delete-able code if you're interested:
GIFTServer/HomeMadeServer.cc and libMRML/cc/CCommunicationHandler.cc  
share some copy-pasted code that is both garbage and (fortunately)  
not used (apart from an extern-declaration in GIFTServer/Server.cc).
The functions are:
string itoa (int val,int length)
and
string dtoa (double val)

I can see no reason to hold on to those... (But if I'm wrong, please  
explain)