Add FAQ about svnadmin hotcopy failing on 2Gb+ strings tables.
Add FAQ about svnadmin hotcopy failing on 2Gb+ strings tables.

* www/project_faq.html (hotcopy-large-repos): New.

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