566012 part 2 fix regresion tests and push mode

* test/utf16bebom.xml: regression test showed that this test case was
  broken but previous behaviour would not detect it !
* parser.c: fix 566012 for the push mode of the parser, tricky !
* test/ebcdic_566012.xml result//ebcdic_566012.xml*: add the test to the
  regression suite
diff --git a/result/ebcdic_566012.xml.rdr b/result/ebcdic_566012.xml.rdr
new file mode 100644
index 0000000..efbc18b
--- /dev/null
+++ b/result/ebcdic_566012.xml.rdr
@@ -0,0 +1 @@
+0 1 test 1 0