Issue 32 in svnbook: Document new 1.6 subcommands and options

[svnbook at googlecode.com]

Comment #3 on issue 32 by cmpil... at gmail.com: Document new 1.6 subcommands  
and options
http://code.google.com/p/svnbook/issues/detail?id=32

Also:
    svnadmin pack
    svnserve --log-file