update xalan + xerces, as the old version had problems emitting windows-1254
files (needed for CHM files).

xalan is patched to emit a newline between xml declaration and doctype (patch
included)


git-svn-id: https://svn.apache.org/repos/asf/httpd/docs-build/trunk@1563700 13f79535-47bb-0310-9956-ffa450edef68