I'm not sure what these missing entities mean, since I didn't manage to find them in documentation sources.
They aren't problematic. That only mean that you have some outdated files with missing and/or old entities.
Anyway, I moved to the next step:
kouber@devel7:~/phpdoc/phpdoc-bg$ make test
SP_ENCODING=XML SP_CHARSET_FIXED=YES /usr/local/bin/onsgmls -i lang-bg -D . -s ./dtds/dbxml-4.1.2/phpdocxml.dcl manual.xml
/usr/local/bin/onsgmls:/home/kouber/phpdoc/phpdoc-bg/en/internals/zendapi/index.xml:27:28:E: character data is not allowed here
/usr/local/bin/onsgmls:manual.xml:132:24:E: character data is not allowed here
make: *** [test] Error 1
What's wrong?
mainly charset issues. I've fixed them for you this time.
Next time, run a 'make test_xml'. while slower (and much memory agressive) it usually helps you when the simple 'make test' fails to produce human redable reports.
Nuno