Revert "[SANTUARIO-351] - Removed ThreadLocal storage from OutputStreams"

This reverts commit 1cf90a82f4abd3c7fe73c5194ba08b95e1ab8b1e.

Conflicts:
	src/main/java/org/apache/xml/security/utils/UnsyncByteArrayOutputStream.java

git-svn-id: https://svn.apache.org/repos/asf/santuario/xml-security-java/branches/1.5.x-fixes@1433343 13f79535-47bb-0310-9956-ffa450edef68
[SANTUARIO-351] - Updating CHANGELOG

git-svn-id: https://svn.apache.org/repos/asf/santuario/xml-security-java/branches/1.5.x-fixes@1433344 13f79535-47bb-0310-9956-ffa450edef68
Updating CHANGELOG

git-svn-id: https://svn.apache.org/repos/asf/santuario/xml-security-java/branches/1.5.x-fixes@1433345 13f79535-47bb-0310-9956-ffa450edef68