(update to the new pikotools api): use a char32_t character as a main character when converting strings

Use a char32_t instead of a wchar_t type. This is needed on systems
where sizeof(wchar_t) is equal to 2.

This affects classes based on the pt::Stream such as Log and HtmlTextStream.

winixd/core/log.cpp

@@ -197,6 +197,13 @@ Log & Log::operator<<(wchar_t s)
 }
 
 
+Log & Log::operator<<(char32_t s)
+{
+	pt::Log::operator<<(s);
+	return *this;
+}
+
+
 Log & Log::operator<<(unsigned short s)
 {
 	pt::Log::operator<<(s);