Print source charset as well as a resulting codepage in FONT_mbtowc.

diff --git a/objects/text.c b/objects/text.c
index b3d863e..a5950d6 100644
--- a/objects/text.c
+++ b/objects/text.c
@@ -91,7 +91,7 @@
 	}
     }
 
-    TRACE("cp == %d\n", cp);
+    TRACE("charset %d => cp %d\n", charset, cp);
 
     if(count == -1) count = strlen(str);
     lenW = MultiByteToWideChar(cp, 0, str, count, NULL, 0);