made xmlGetUTF8Char public Daniel

* include/libxml/encoding.h encoding.c: made xmlGetUTF8Char public
Daniel
diff --git a/encoding.c b/encoding.c
index 69b3dac..2faa725 100644
--- a/encoding.c
+++ b/encoding.c
@@ -135,7 +135,7 @@
  * Returns the char value or -1 in case of error and update @len with the
  *        number of bytes used
  */
-static int
+int
 xmlGetUTF8Char(const unsigned char *utf, int *len) {
     unsigned int c;