[patch] compile error fixes

[Hilaire Fernandes <hilaire@seul.org>]

Aaron Lehmann writes:
 > Hi,
 > 
 > Here is a fix for some compile errors. No warrenty on whether they work:

Thanks :)

 > 
 > I am getting many other errors though. Such as:
 > 
 > point.cc: In method `void homothetie_point::sauve_disk(_xmlNode *,
 > liste_elem &)':
 > point.cc:2208: passing `const char *' as argument 3 of
 > `xmlNewChild(_xmlNode *, xmlNs *, const xmlChar *, const xmlChar *)'
 > changes signedness
 > 
 > There are many errors of this type in that file.


As you mention it, I take my chance fixing it.
Fixed and commited.

Hilaire