Remove possibly confusing language about licenses from the book:
Remove possibly confusing language about licenses from the book:

* doc/book/book/ch01.xml: Daniel Rall pointed out that "Apache"
    doesn't necessarily imply software to most people.  Rather than
    expand to clarify, it seems better to just not mention Apache/BSD.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion