[SANTUARIO-307] - utf8 encode is broken. Thanks to TH Heung for the patch.


Conflicts:
	src/main/java/org/apache/xml/security/c14n/implementations/UtfHelpper.java
	src/main/java/org/apache/xml/security/stax/impl/transformer/canonicalizer/CanonicalizerBase.java

git-svn-id: https://svn.apache.org/repos/asf/santuario/xml-security-java/branches/1.5.x-fixes@1603396 13f79535-47bb-0310-9956-ffa450edef68