[xml] Test failures with 2.6.10 on Redhat Linux 7.1, Enterprise 2.1

[Albert Chin <libxml mlists thewrittenword com>]

$ gtar zxf libxml2-2.6.10.tar.gz
$ cd libxml2-2.6.10
$ ./configure --with-python=no
$ make && make check
...
## Automata regression tests
## Schemas regression tests
## Relax-NG regression tests
docbook_0 result
0a1,6 > ./test/relaxng/docbook_0.xml:16: I/O warning : failed to load external e
ntity "test/dtd/4.1.2/docbookx.dtd" > ]> > ^ > ./test/relaxng/docbook_0.xml:1864
: parser error : Entity 'copy' not defined > <sgmltag>&amp;copy;</sgmltag> &mdas
h; copyright sign (&copy;) > ^
## Relax-NG streaming regression tests
docbook_0 result
0a1,6 > ./test/relaxng/docbook_0.xml:16: I/O warning : failed to load external e
ntity "test/dtd/4.1.2/docbookx.dtd" > ]> > ^ > ./test/relaxng/docbook_0.xml:1864
: parser error : Entity 'copy' not defined > <sgmltag>&amp;copy;</sgmltag> &mdas
h; copyright sign (&copy;) > ^
## Threaded regression tests
## generating dba100000.xml
## Timing tests to try to detect performance
## as well a memory usage breakage when streaming
...

Anything to worry about?

-- 
albert chin (china thewrittenword com)